How to enter 3 garnishments?

I'm glad that you reach out here in the Community, @accounting580.

I see how it can be helpful for you to add three garnishments to your employee's payroll deductions.

The ability to add more than two garnishments to each employee is currently unavailable in QuickBooks Online (QBO).

While this option isn't available, I recommend sending feedback to our Product Development Team. They might consider this in our future product updates, and other users may also find this suggestion helpful.

Here's how:

1. Go to the Gear icon, then below the Profile column, select the Feedback option.
2. Type in a summary of your product or feature suggestion.
3. Click the Next icon.

Consider reading this article if you want to set up a new deduction item for each employee: Set up, change, or delete employee-paid payroll deductions.

If you require additional suggestions about managing deductions on the payroll, route back yourself in this thread. We'll be happy to entertain it. Thank you, and have a great day!