This button (Finance → Team members, top right) puts the entire list into inline edit mode. An input field appears immediately at each assignment in which you can adjust the deduction — without having to navigate to the client profile for each client.
Ideal for monthly closing: open the page at the start of the month, click Edit deductions, go through all assignments, adjust deductions based on actual ad spend or external costs and save. One workflow, no clicking through to 20 client profiles.
Click Done editing to hide the input fields again.