Log in to vetmed:seeker, the search engine of the university library, with your access data at the top right.
Your registration details are either your university ID (matriculation number and password) or the sticker number of your ID with ub_ in front (ub_1234567) and the initial of your last name in capital letters, followed by the initial of your first name in lowercase followed by your date of birth.
For example Erika Musterfrau, who was born on May 20, 1989, has the following password: Me20051989.
After you have registered, click on your name in the top right corner and you will find the menu item "my loans". Here you will find your current loans and to the right you can extend the loan period for the books. To do this, click on the corresponding button.