Sorry @jklcpa, I got that backwards. I thought you had it all set up in the outside software and were asking about the depreciation setup in the tax software.
Assuming that your client is going to tell you by unit what appliances are replaced, which carpets are replaced by unit, etc. I would have Land and Buildings as my first level categories, then the units as sub-categories under each building (building A, unit 1). Then all the components, F&F and improvements listed under each unit entered as the lowest level sub-categories in such a way that I could sort on MACRS Class and Life to get summary totals.
Once you have it set up, it should be pretty easy to maintain.
I envy you getting to set up the depreciation schedule. I have had many instances where I had to go into a musty spreadsheet and try and figure out how that came out as something else on the tax return.
Tom
Longview, TX