@lrparker There are two sections, Expenses which you incurred for the entire home & Expenses which you incurred for office space only (not for entire home).
If you enter something in the "Expenses which you incurred for the entire home", then the expense will be prorated based on the amount of your home that you use for your work. This would be where you would put your apartment rent.
If you put something in the "Expenses which you incurred for office space only (not for entire home)", then the whole expense will be deducted.
