Yes. When you create a department, or location, it does not require users to be assigned to that department. When the department is created a page on the social intranet is automatically created for it. The department is also added to your organization’s departments org chart

You can add users to the department if you have the permission to edit users granted or if you are a page editor for the department. When you edit a user, you can assign them to a department and location in their personal info card.