how to restore deleted department

Welcome to the Community, Site.
 

QuickBooks Online (QBO) allows you to restore a deleted department by going to All lists in the Settings.

Here’s how:

1. Go to the Gear icon.
2. Select the All lists under the LISTS column.
3. Scroll down until you find Departments. 
4. Click the small Gear icon at the top right of the list and ensure Include inactive is checked. 
   
   
    
5. Select the deleted department, then click Make active.
   
   

Once done, you can now start recording a deposit.

Could you clarify what you mean by department user? Do you mean a customer or a vendor user?
 

If you’re referring to something else, don’t hesitate to leave a message below. We're here to assist.