If you have autopay set up:
There is not a way to assign or remove specific bills from individual students. Here is a workaround that allows students to purchase their desks-
Option 1: Add a "homeowner" job position
Add a "homeowner" position to your job board, and set the salary equal to rent.
When a student purchases their desk, hire them as a homeowner.
Now, when autopay paychecks and expenses send, students will receive a "homeowner" paycheck that refunds the rent bill.
Option 2: Delete the rent
When rent is sent, click into the student's transaction history and delete the rent
Better yet, have a student take over this responsibility as a job for you! Learn how to give students access here.
If you do not have autopay set up:
Select all students.
Uncheck the students who have purchased their desks.