If you want to disapprove a fee from the invoice, you should take the following steps:
Step 1: Go to the Booking view page-> Finance tab-> Price card.
Step 2: Click on the arrow of the Price Breakdown.
Step 3: Click on the arrow of the Fees and then on the minus sign to Disapprove.
Note that if you click on the pencil next to the fee amount, a drawer opens in which you can edit the fee items and finally click on Save.