thank you @LeventK. I did that but I realized the option to copy the app is open when co-authored. How do I work around this?

@Steve In this particular case, the row information is edited including the related tables and yet no recalculation in the particular column. Other columns on the same rows get updated when edited.

@1minManager it is not updating and I have an actual column for the expression. Could that be the reason? Or changing to virtual column is best?

@1minManager Thank you for your help. It worked and but it does not update whenever information Enumerate Building(Building_total) is updated.

@1minManager Total Building Footprints should multiple each building footprints by its number of floors, if answer is less than 50, it should not be added to the rest of the building info. Building A, 20 x 2 = 40 Building B, 330 x1 = 330 Total Buildi...