Server instances and their databases can be assigned to the same or different categories and subcategories.
NOTE: You can use categories, if the central repository is configured and selected for use. For more information, see Select a Central Repository.
To assign a server instance or database to a category
Select the Backup Manager pane (CTRL+1).
Right-click the server instance or database and select Assign Categories.
Select a subcategory to assign the server instance or database to.
NOTE: You can only select one subcategory per category, but you can assign server instances and databases to multiple categories.