If you want to achieve a doctoral degree in the structured PhD program "Ecology and Environmental Research" (PEER) you need to hand in an application. This has to be done shortly before or at the beginning of your doctoral studies. But also a direct admission of master students with higher-than-average credits (Fast-Track) is possible.
For the admission you need the confirmation of the supervisor of your doctorate, who must be an authorized examiner (“prüfungsberechtigt”). Two further mentors should be agreed upon before applying for PEER.
The PEER executive committee and the Dean's office will evaluate content and formalities of your application. Your doctoral studies within PEER require separate admission & request forms (only in German available, English translation example here) for acceptance as doctoral candidate within the BayNAT graduate school. When your PEER & BayNAT applications are complete you will be approved to start your PhD by the BayNAT committee.
Further you need to draft a Supervisory Agreement with the supervisor for your doctoral studies, which is also a precondition to get individual funding within the UBT Graduate School: