Room Calculated Attributes
You need admin access to the database to create composite text attributes, as the setup is done in the Administration settings. Please refer to https://drofus.atlassian.net/wiki/spaces/DV/pages/1332416587.
Room Subtraction Example
By taking the existing field Programmed Area and subtracting from it Designed Area, we can understand if a room is under-designed or over-designed.
We can leverage the current properties grouping names so the team; understands that they are related.
We defined our new field Delta and located it within the Areas and Measurements group.
If the Programmed Area were smaller than the Designed Area, we would expect the Delta to be negative.
Several formats are available, and there is no limit to how complex you might want to go in combination.
Explore https://drofus.atlassian.net/wiki/spaces/DV/pages/2621898753 to see how this can be done with Items.