Enable teachers to borrow textbooks for themselves.

Select the “Settings” tab on the main screen.
To allow teachers to borrow textbooks for themselves, click the “Enable” button in the “Rights” group,
located under the “Teachers cannot borrow textbooks for themselves.” header.

Click the corresponding button again to disable the feature.

See also:
How to assign administrator rights to the Textbook storage?
How to assign borrow/return textbooks rights to the Textbook storage?
Enable teachers to borrow textbooks for themselves and for their students.