To create, modify, and deactivate departments, you do so under Admin -> Departments.
However, if you need to move a department, we require an Admin to contact us (https://customerportal.talentech.com/knowledge/kb-tickets/new) with the following information:
Name + ID of the department to be moved under Name + ID of the department.
You can find the department's ID in: Admin -> Departments -> Select department.