How do I enter rent for a party who is paying rent?

You can enter it where you enter expenses.

There will be a Real Estate section, and you will see a button to enter “Tenant expenses.”

If both parties are paying rent on two separate apartments, you would create two separate tenant expense items. One would be for one party and one would be for the other party.

If both parties are sharing the rent on the same apartment, you would do the same thing: create two separate tenant expense items.