The selectable options for the Actual Use menu and the corresponding Use of Surface selection you must make to access them is found under Administration > Master Data > Catalog Management > Actual Use.

Actual Usage Options and the Corresponding Use of Surface Selections

When you double-click one of these options, you can edit their name, sorting position, and associated colour, and you can enable or disable them. You can also change their associated Kind of Room Usage menu option, if you have set a three-level structure for DIN 277 room categorization.

Editable Options for Actual Use Entries