docs(admin): Full admin docs

content/admin/_index.en.md

@@ -0,0 +1,36 @@
+---
+linkTitle: "Admins"
+title: Admin Documentation
+weight: 1
+prev: /
+next: /admin/quickstart
+cascade:
+  type: docs
+---
+
+This part of the documentation deals with the installation, configuration, and operation of the runner system for regular admins.
+If you are interested in the operation for regular users, take a look at the [User Area](/user).
+
+## Services
+
+A brief overview of the various services of the system and their interaction
+
+* Backend: Contains the main logic and manages the data (via database connection)
+* Mailer: Automatically sends emails based on HTML templates
+* Document Server: Creates PDFs (certificates, runner cards, sponsorship declarations) from HTML templates
+* Frontend: Administration interface for the admins and users of the runner system
+* Self-service: Portal where citizen and company runners can register and view their data
+* Beamer Show: Displays current statistics and top lists for the event
+* Scan Client: Software for the scanner stations
+* Docs: This documentation
+
+![Service Diagrams](/images/service_interaction.png)
+
+## FAQ
+
+A few of the most frequently asked questions in advance
+
+### Why can't I see a page?
+
+Users only see the pages in the system for which they have permissions.
+If you can't see a page, you are probably not fully authorized as an admin.