Thanks for posting here, jenny5cats.
When you set up the garnishment, you only have the option to add the Default Rate and Limit. While we're unable to prompt QuickBooks to garnish the remainder, you'll want to manually edit the amount when you run the employee's payroll.
I've got this article for more details: Set up a payroll garnishment item. You can also check other guides and articles, by browsing a topic in our general support page.
Please feel free to leave a reply if you have any follow-up questions or other concerns for QuickBooks. I'm here to answer them and help you some more. Take care and stay safe.
