diff --git a/package.json b/package.json
index a97963a..d247c39 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,8 @@
     "nanoid": "^3.3.3",
     "nodemailer": "^6.7.0",
     "redis": "^3.1.2",
-    "winston": "^3.7.2"
+    "winston": "^3.7.2",
+    "zod": "^3.14.4"
   },
   "devDependencies": {
     "@types/chai": "^4.2.22",
diff --git a/src/Controllers/common.ts b/src/Controllers/common.ts
index a9a0caf..ad2dc49 100644
--- a/src/Controllers/common.ts
+++ b/src/Controllers/common.ts
@@ -10,6 +10,7 @@ export enum DataType {
   PERMISSION_LEVEL = "'ELEVATED' | 'STANDARD'",
   DATETIME = "ISOstring",
   UUID = "string",
+  RESULT_SCHEMA = "result_schema",
 }
 
 interface Body {
@@ -64,6 +65,13 @@ export const genericError = {
   },
 };
 
+export const NAME_ERROR = {
+  type: "error",
+  payload: {
+    message: "The name has to be at least 1 character long",
+  },
+};
+
 export function validateName(name: string) {
   return name.length > 0;
 }
@@ -106,12 +114,7 @@ export async function handleCreateByName(
   }
 
   if (!validateName(name)) {
-    return res.status(400).json({
-      type: "error",
-      payload: {
-        message: "The name has to be at least 1 character long",
-      },
-    });
+    return res.status(400).json(NAME_ERROR);
   }
 
   // Check if link object exsits
diff --git a/src/Controllers/discipline.controller.ts b/src/Controllers/discipline.controller.ts
new file mode 100644
index 0000000..93431ae
--- /dev/null
+++ b/src/Controllers/discipline.controller.ts
@@ -0,0 +1,189 @@
+import { Prisma, Organisation, Admin, AdminLevel, Team } from "@prisma/client";
+import { PrismaClientKnownRequestError, PrismaClientUnknownRequestError } from "@prisma/client/runtime";
+import { Request, Response } from "express";
+import prisma from "../lib/prisma";
+import ForwardableError from "../Middleware/error/ForwardableError";
+import NotFoundError from "../Middleware/error/NotFoundError";
+import {
+  createInsufficientPermissionsError,
+  DataType,
+  generateError,
+  generateInvalidBodyError,
+  NAME_ERROR,
+  validateName,
+} from "./common";
+
+require("express-async-errors");
+
+const basicDiscipline = {
+  pid: true,
+  name: true,
+  visual: { select: { pid: true, location: true } },
+  maxTeamSize: true,
+  minTeamSize: true,
+  event: { select: { pid: true, name: true } },
+  roles: { select: { pid: true, name: true } },
+} as const;
+
+const authenticatedDiscipline = {
+  ...basicDiscipline,
+  teams: { select: { pid: true, name: true } },
+} as const;
+
+const elevatedDiscipline: Prisma.DisciplineFindManyArgs["select"] = {
+  ...authenticatedDiscipline,
+  teams: { select: { pid: true, name: true, leaderEmail: true } },
+};
+
+export const _getAllDisciplines = async (
+  res: Response,
+  authenticated: boolean | undefined,
+  eventId: string | undefined
+) => {
+  const disciplines = await prisma.discipline.findMany({
+    where: { event: { pid: eventId } },
+    select: !authenticated ? basicDiscipline : authenticatedDiscipline,
+  });
+
+  return res.status(200).json({
+    type: "success",
+    payload: {
+      disciplines,
+    },
+  });
+};
+
+interface GetAllDisciplinesSearchParams {
+  eventPid?: string;
+}
+
+export const getAllDisciplines = async (req: Request<{}, {}, {}, GetAllDisciplinesSearchParams>, res: Response) => {
+  return _getAllDisciplines(res, req.auth?.isAuthenticated, req.query.eventPid);
+};
+
+interface GetAllDisciplinesQueryParams {
+  eventPid: string;
+}
+
+export const GetAllDisciplinesWithParam = async (req: Request<GetAllDisciplinesQueryParams>, res: Response) => {
+  return _getAllDisciplines(res, req.auth?.isAuthenticated, req.params.eventPid);
+};
+
+interface GetDisciplineQueryParams {
+  pid: string;
+}
+
+export const getDiscipline = async (req: Request<GetDisciplineQueryParams>, res: Response) => {
+  const { pid } = req.params;
+
+  const discipline = await prisma.discipline.findUnique({
+    where: { pid },
+    select: !req.auth?.isAuthenticated
+      ? basicDiscipline
+      : req.auth.permission_level !== "ELEVATED"
+      ? authenticatedDiscipline
+      : elevatedDiscipline,
+  });
+
+  if (!discipline) {
+    throw new NotFoundError("discipline", pid);
+  }
+
+  return res.status(200).json({
+    type: "success",
+    payload: {
+      discipline: {
+        ...discipline,
+        event: {
+          ...discipline.event,
+          _links: [{ rel: "self", type: "GET", href: `/api/events/${discipline.event.pid}` }],
+        },
+        roles: discipline.roles.map((role) => ({
+          ...role,
+          _links: [{ rel: "self", type: "GET", href: `/api/role/${role.pid}` }],
+        })),
+        ...((discipline as any).teams
+          ? (discipline as any).teams.map((team: Team) => ({
+              ...team,
+              _links: [{ rel: "self", type: "GET", href: `/api/teams/${team.pid}` }],
+            }))
+          : {}),
+      },
+    },
+  });
+};
+
+interface CreateDisciplineBody {
+  name?: string;
+  minTeamSize?: number;
+  maxTeamSize?: number;
+}
+
+// require: auth(ELEVATED)
+// at: POST /event/:eventPid/discipliens
+export const createDiscipline = async (req: Request<{ eventPid: string }, {}, CreateDisciplineBody>, res: Response) => {
+  if (req.auth?.permission_level !== "ELEVATED") {
+    return res.status(403).json(createInsufficientPermissionsError());
+  }
+
+  const { name, minTeamSize, maxTeamSize } = req.body;
+
+  if (typeof name !== "string" || typeof minTeamSize !== "number" || typeof maxTeamSize !== "number") {
+    return res.status(400).json(
+      generateInvalidBodyError({
+        name: DataType.STRING,
+        minTeamSize: DataType.NUMBER,
+        maxTeamSize: DataType.NUMBER,
+      })
+    );
+  }
+
+  if (!validateName(name)) {
+    return res.status(400).json(NAME_ERROR);
+  }
+
+  try {
+    const discipline = await prisma.discipline.create({
+      data: { name, minTeamSize, maxTeamSize, event: { connect: { pid: req.params.eventPid } } },
+      select: {
+        pid: true,
+        name: true,
+        minTeamSize: true,
+        maxTeamSize: true,
+        event: { select: { pid: true, name: true } },
+      },
+    });
+
+    return res.status(201).json({ type: "success", payload: { discipline } });
+  } catch (e) {
+    if (e instanceof PrismaClientKnownRequestError && e.code === "P2025") {
+      return res.status(404).json(generateError(`Could not link to event with ID '${req.params.eventPid}'`));
+    }
+    throw e;
+  }
+};
+
+interface DeleteDisciplineQueryParams {
+  pid: string;
+}
+
+// requires: auth(ELEVATED)
+export const deleteDiscipline = async (req: Request<DeleteDisciplineQueryParams>, res: Response) => {
+  if (req.auth?.permission_level !== "ELEVATED") {
+    res.status(403).json(createInsufficientPermissionsError());
+  }
+
+  const { pid } = req.params;
+
+  try {
+    await prisma.discipline.delete({ where: { pid } });
+
+    return res.status(204).end();
+  } catch (e) {
+    if (e instanceof PrismaClientKnownRequestError && e.code === "P2025") {
+      throw new NotFoundError("discipline", pid);
+    }
+
+    throw e;
+  }
+};
diff --git a/src/Controllers/group.controllers.ts b/src/Controllers/group.controllers.ts
index 10f42c7..ee7fb5e 100644
--- a/src/Controllers/group.controllers.ts
+++ b/src/Controllers/group.controllers.ts
@@ -1,8 +1,8 @@
 import { Admin } from "@prisma/client";
-import { PrismaClientUnknownRequestError } from "@prisma/client/runtime";
+import { PrismaClientKnownRequestError, PrismaClientUnknownRequestError } from "@prisma/client/runtime";
 import { Request, Response } from "express";
 import prisma from "../lib/prisma";
-import { generateError, genericError, handleCreateByName } from "./common";
+import { createInsufficientPermissionsError, generateError, genericError, handleCreateByName } from "./common";
 
 const basicGroup = {
   pid: true,
@@ -114,3 +114,27 @@ export const createGroup = async (req: Request<{ organisationPid: string }, {},
     res
   );
 };
+
+interface DeleteGroupQueryParams {
+  pid: string;
+}
+
+export const deleteGroup = async (req: Request<DeleteGroupQueryParams>, res: Response) => {
+  if (req.auth?.permission_level !== "ELEVATED") {
+    return res.status(403).json(createInsufficientPermissionsError());
+  }
+
+  const { pid } = req.params;
+
+  try {
+    prisma.group.delete({ where: { pid } });
+
+    return res.status(204).end();
+  } catch (e) {
+    if (e instanceof PrismaClientKnownRequestError && e.code === "P2025") {
+      return res.status(404).json(generateError(`The group with the ID ${pid} could not be found`));
+    }
+
+    throw e;
+  }
+};
diff --git a/src/Controllers/role_schema.controller.ts b/src/Controllers/role_schema.controller.ts
new file mode 100644
index 0000000..ca73554
--- /dev/null
+++ b/src/Controllers/role_schema.controller.ts
@@ -0,0 +1,125 @@
+import { Prisma } from "@prisma/client";
+import { PrismaClientKnownRequestError } from "@prisma/client/runtime";
+import { Request, Response } from "express";
+import prisma from "../lib/prisma";
+import { DurationSchemaT, parseSchema, PointSchemaT } from "../lib/result_schema";
+import NotFoundError from "../Middleware/error/NotFoundError";
+import SchemaError from "../Middleware/error/SchemaError";
+import {
+  createInsufficientPermissionsError,
+  DataType,
+  generateInvalidBodyError,
+  NAME_ERROR,
+  validateName,
+} from "./common";
+
+const roleSchema = {
+  name: true,
+  schema: true,
+  discipline: { select: { pid: true, name: true } },
+  visual: { select: { pid: true, location: true } },
+} as const;
+
+export const _getAllRoleSchemas = async (res: Response, disciplinePid: string | undefined) => {
+  const schemas = await prisma.roleSchema.findMany({
+    where: { discipline: { pid: disciplinePid } },
+    select: roleSchema,
+  });
+
+  return res.status(200).json({
+    type: "success",
+    payload: {
+      roleSchemas: schemas,
+    },
+  });
+};
+
+interface GetAllRoleSchemasSearchParams {
+  disciplinePid?: string;
+}
+
+export const getAllRoleSchemas = async (req: Request<{}, {}, {}, GetAllRoleSchemasSearchParams>, res: Response) => {
+  return _getAllRoleSchemas(res, req.query.disciplinePid);
+};
+
+interface GetAllRoleSchemasWithParamQueryParams {
+  organisationPid: string;
+}
+
+export const getAllRoleSchemasWithParam = async (
+  req: Request<GetAllRoleSchemasWithParamQueryParams>,
+  res: Response
+) => {
+  return _getAllRoleSchemas(res, req.params.organisationPid);
+};
+
+interface GetRoleSchemaQueryParams {
+  pid: string;
+}
+
+export const getRoleSchema = async (req: Request<GetRoleSchemaQueryParams>, res: Response) => {
+  const { pid } = req.params;
+
+  const schema = await prisma.roleSchema.findUnique({ where: { pid }, select: roleSchema });
+
+  if (!schema) {
+    throw new NotFoundError("roleSchema", pid);
+  }
+
+  return res.status(200).json({
+    type: "success",
+    payload: {
+      roleSchema: {
+        ...schema,
+        discipline: {
+          ...schema.discipline,
+          _links: [{ rel: "self", type: "GET", href: `/api/disciplines/${schema.discipline.pid}` }],
+        },
+      },
+    },
+  });
+};
+
+interface CreateRoleSchemaBody {
+  name?: string;
+  schema?: any;
+}
+
+// at: POST /discipline/:disciplinePid/role-schemas
+// requires: auth(ELEVATED)
+export const createRoleSchema = async (
+  req: Request<{ disciplinePid: string }, {}, CreateRoleSchemaBody>,
+  res: Response
+) => {
+  if (req.auth?.permission_level !== "ELEVATED") {
+    return res.status(403).json(createInsufficientPermissionsError());
+  }
+
+  const { name, schema: resultSchema } = req.body;
+
+  if (typeof name !== "string") {
+    return res.status(400).json(generateInvalidBodyError({ name: DataType.STRING, schema: DataType.RESULT_SCHEMA }));
+  }
+
+  if (!validateName(name)) {
+    return res.status(400).json(NAME_ERROR);
+  }
+
+  // Validate the result schema (Errors should be handled by the default error handler)
+  const validatedSchema = parseSchema(resultSchema);
+
+  try {
+    const schema = await prisma.roleSchema.create({
+      data: { name, schema: validatedSchema, discipline: { connect: { pid: req.params.disciplinePid } } },
+      select: roleSchema,
+    });
+
+    return res.status(201).json({ type: "success", payload: { roleSchema: schema } });
+  } catch (e) {
+    if (e instanceof PrismaClientKnownRequestError && e.code === "P2025") {
+      throw new NotFoundError("discipline", req.params.disciplinePid);
+    }
+
+    throw e;
+  }
+};
diff --git a/src/Middleware/error/ForwardableError.ts b/src/Middleware/error/ForwardableError.ts
index 04bc5e1..bbae485 100644
--- a/src/Middleware/error/ForwardableError.ts
+++ b/src/Middleware/error/ForwardableError.ts
@@ -1,6 +1,7 @@
 export default class ForwardableError extends Error {
   // If in different context
   private readonly __id = "CUSTOM_ERROR";
+  protected readonly __oid?: string;
 
   public readonly status: number;
 
diff --git a/src/Middleware/error/NotFoundError.ts b/src/Middleware/error/NotFoundError.ts
new file mode 100644
index 0000000..382441f
--- /dev/null
+++ b/src/Middleware/error/NotFoundError.ts
@@ -0,0 +1,13 @@
+import ForwardableError from "./ForwardableError";
+
+export default class NotFoundError extends ForwardableError {
+  protected __oid = "NOT_FOUND_ERROR";
+
+  constructor(resource?: string, pid?: string) {
+    super(404, `The requested ${resource ?? "resource"}${pid ? ` with PID '${pid}'` : ""} could not be found!`);
+  }
+
+  static isNotFoundError(err: any): err is NotFoundError {
+    return err.__oid === "NOT_FOUND_ERROR";
+  }
+}
diff --git a/src/Middleware/error/SchemaError.ts b/src/Middleware/error/SchemaError.ts
new file mode 100644
index 0000000..b880480
--- /dev/null
+++ b/src/Middleware/error/SchemaError.ts
@@ -0,0 +1,13 @@
+import ForwardableError from "./ForwardableError";
+
+export default class SchemaError extends ForwardableError {
+  protected __oid = "SCHEMA_ERROR";
+
+  constructor(message: string) {
+    super(400, message);
+  }
+
+  public static isSchemaError(err: any): err is SchemaError {
+    return err.__oid === "SCHEMA_ERROR";
+  }
+}
diff --git a/src/Routes/discipline.routes.ts b/src/Routes/discipline.routes.ts
new file mode 100644
index 0000000..08aec30
--- /dev/null
+++ b/src/Routes/discipline.routes.ts
@@ -0,0 +1,19 @@
+import express from "express";
+import eventRouter from "./event.routes";
+import {
+  createDiscipline,
+  deleteDiscipline,
+  getAllDisciplines,
+  getDiscipline,
+} from "../Controllers/discipline.controller";
+import { requireAuthentication } from "../Middleware/auth/auth";
+
+const router = express.Router();
+
+router.get("/", getAllDisciplines); // TODO: Optional auth
+router.get("/:pid", getDiscipline);
+router.delete<"/:pid", { pid: string }>("/:pid", requireAuthentication, deleteDiscipline);
+
+eventRouter.post("/:eventPid/disciplines", requireAuthentication, createDiscipline);
+
+export default router;
diff --git a/src/Routes/group.routes.ts b/src/Routes/group.routes.ts
index 12ae59d..4ab9387 100644
--- a/src/Routes/group.routes.ts
+++ b/src/Routes/group.routes.ts
@@ -1,5 +1,11 @@
 import express from "express";
-import { createGroup, getAllGroups, getAllGroupsWithParam, getGroup } from "../Controllers/group.controllers";
+import {
+  createGroup,
+  deleteGroup,
+  getAllGroups,
+  getAllGroupsWithParam,
+  getGroup,
+} from "../Controllers/group.controllers";
 import { requireAuthentication } from "../Middleware/auth/auth";
 import organisationRouter from "./organisation.routes";
 
@@ -7,6 +13,7 @@ const router = express.Router();
 
 router.get("/", getAllGroups);
 router.get("/:pid", getGroup);
+router.delete<"/:pid", { pid: string }>("/:pid", requireAuthentication, deleteGroup);
 
 organisationRouter.get("/:organisationPid/groups", getAllGroupsWithParam);
 organisationRouter.post("/:organisationPid/groups", requireAuthentication, createGroup);
diff --git a/src/Routes/organisation.routes.ts b/src/Routes/organisation.routes.ts
index 7cff08d..9cda611 100644
--- a/src/Routes/organisation.routes.ts
+++ b/src/Routes/organisation.routes.ts
@@ -2,6 +2,7 @@ import express from "express";
 import eventRouter from "./event.routes";
 import {
   createOrganisation,
+  deleteOrganisation,
   getAllOrganisations,
   getAllOrganisationsWithParam,
   getOrganisation,
@@ -14,6 +15,7 @@ const router = express.Router();
 router.get("/", getAllOrganisations);
 router.get("/:pid", getOrganisation);
 router.put<"/:pid", { pid: string }>("/:pid", requireAuthentication, updateOrganisation);
+router.delete<"/:pid", { pid: string }>("/:pid", requireAuthentication, deleteOrganisation);
 
 eventRouter.get("/:eventPid/organisations", getAllOrganisationsWithParam);
 eventRouter.post<"/:eventPid/organisations", { eventPid: string }>(
diff --git a/src/Routes/role_schema.routes.ts b/src/Routes/role_schema.routes.ts
new file mode 100644
index 0000000..ea3c938
--- /dev/null
+++ b/src/Routes/role_schema.routes.ts
@@ -0,0 +1,19 @@
+import express from "express";
+import disciplineRouter from "./discipline.routes";
+import {
+  createRoleSchema,
+  getAllRoleSchemas,
+  getAllRoleSchemasWithParam,
+  getRoleSchema,
+} from "../Controllers/role_schema.controller";
+import { requireAuthentication } from "../Middleware/auth/auth";
+
+const router = express.Router();
+
+router.get("/", getAllRoleSchemas);
+router.get("/:pid", getRoleSchema);
+
+disciplineRouter.get("/:disciplinePid/role-schemas", getAllRoleSchemasWithParam);
+disciplineRouter.post("/:disciplinePid/role-schemas", requireAuthentication, createRoleSchema);
+
+export default router;
diff --git a/src/app.ts b/src/app.ts
index da3df2c..39dcc0f 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -6,6 +6,8 @@ import argon2 from "argon2";
 import adminRouter from "./Routes/admin.routes";
 import organisationRouter from "./Routes/organisation.routes";
 import groupRouter from "./Routes/group.routes";
+import disciplineRouter from "./Routes/discipline.routes";
+import roleSchemaRouter from "./Routes/role_schema.routes";
 import defaultErrorHandler from "./Middleware/error/handler";
 import logger from "./Middleware/error/logger";
 import debugLogger from "./Middleware/debug/logger";
@@ -53,8 +55,12 @@ async function main() {
 
   app.use("/api/groups", groupRouter);
 
+  app.use("/api/disciplines", disciplineRouter);
+
+  app.use("/api/role-schemas", roleSchemaRouter);
+
   // Error handling
-  app.use(defaultErrorHandler);
+  app.use(defaultErrorHandler); // Not working
 
   app.listen(process.env.PORT, () => {
     logger.info(`Listening on port ${process.env.PORT}`);
diff --git a/src/lib/result_schema.ts b/src/lib/result_schema.ts
new file mode 100644
index 0000000..7da23c9
--- /dev/null
+++ b/src/lib/result_schema.ts
@@ -0,0 +1,65 @@
+import { Schema, z, ZodError } from "zod";
+import SchemaError from "../Middleware/error/SchemaError";
+
+// -- Schema definitions --
+
+const SchemaVersion = z.enum(["1.0"]);
+
+const TimeUnit = z.enum(["days", "hours", "minutes", "seconds", "milliseconds"]);
+
+const DurationSchema = z
+  .object({
+    type: z.literal("duration"),
+    min: z.number().int({ message: "min must be an integer (relative to smallestUnit)" }),
+    max: z.number().int({ message: "max must be an integer (relative to smallestUnit)" }),
+    smallestUnit: TimeUnit,
+    higherIsBetter: z.boolean(),
+  })
+  .refine(({ min, max }) => min < max, { message: "min must be smaller than max" });
+
+const PointSchema = z
+  .object({
+    type: z.literal("points"),
+    min: z.number(),
+    max: z.number(),
+    step: z.number(),
+    start: z.number(),
+
+    unit: z.string(),
+    unitSign: z.string(),
+
+    higherIsBetter: z.boolean(),
+  })
+  .refine(({ min, max }) => min < max, { message: "min must be smaller than max" })
+  .refine(({ min, max, start }) => min <= start && max >= start, {
+    message: "start must be larger than or equal to min and smaller than or equal to max",
+  });
+
+export type DurationSchemaT = z.infer<typeof DurationSchema>;
+export type PointSchemaT = z.infer<typeof PointSchema>;
+
+// -- Parser --
+
+export function parseSchema(schema: any): DurationSchemaT | PointSchemaT {
+  try {
+    if (schema.type === "duration") {
+      return DurationSchema.parse(schema);
+    } else if (schema.type === "points") {
+      return PointSchema.parse(schema);
+    }
+  } catch (e) {
+    if (e instanceof ZodError) {
+      const issue = e.issues.at(0);
+
+      if (issue) {
+        throw new SchemaError(`Error with the schema: ${issue.path ? `${issue.path}:` : ""} ${issue.message}`);
+      }
+
+      throw new SchemaError("Unknown error occured while validating the schema");
+    }
+
+    throw e;
+  }
+
+  throw new SchemaError("Error with the schema: type must be either 'duration' or 'points'");
+}