The line 11 and 12 is tendered in the line bundle and awarded only as a total performance.
The current timetables of the lines 11 and 12 and a timetable design with the required changes can be found in the tender documents.
See also website: https://www.znas.de/ausschreibungen/aktuelle-vergaben/
Provision of public passenger transport services in BuslinienVerkehr (Citybus) in Amberg. The service includes line 11 (Bahnhof-Fachoberschule-Bahnhof) and line 12 (Bahnhof - Eisberg - Bahnhof) from 1.1.2020. The service is advertised as a line bundle.
Further details are laid down in the tender documents.