How to set-up Catalog Permissions

Goal:

Select Settings
Select Catalog Item Access
Turn the Catalog Permissions toggle to
Notice the tabs Users & Departments
Assign users by name to the departments or departments to the user by clicking the check-boxes by the names
Once all users or departments have been assigned, click the icon

You must have Superuser access to assign catalog permissions.
When you make changes from here, they take effect immediately.
If you are not the primary user managing Product Catalog, it is best to check in with them first as these controls take priority over any Department Tag assignment within Product Catalog.