You need to add the server's cash tips when you create a paycheck. This way, you can track all payroll taxes. The amount appears on the pay stub but is not part of the gross or net on the paycheck. I'd be happy to guide you how.
First, add the cash tip as a pay type for your employees. Here's how:
On the left pane, select Workers.
Go to the Employees tab, then select the employee name.
Click on the edit icon for Pay.
Check the box for Cash Tips.
Next, create paychecks and add the cash tips amount by following the steps below:
Go to Workers on the left panel.
Click Run payroll at the top right corner of the screen.
Select the Bank account and Pay period, then enter the Pay date.
Choose the employees you’re working on.
Enter the amount in the Cash Tips box.
Click Preview payroll.
Once you're ready, you can Submit payroll.
For additional information, I've attached some articles you can use like how to set up the tip tracking feature, and other tips pay types:
3. Go to the "Sales Form Content" section and select the pencil to edit
4. Place a check next to the "Tips" option.
This should give you a pop-up prompt to define the type of accounting based on who receives the tips
If you distribute the tips your employees (as it sounds like you do), then select My Team. This creates a liabilities account "Undistributed Tips" in your chart of accounts to hold the tips balance to pay out to them via payroll checks or regular check.
Choosing this route will update your sales receipt template also to have a line down near the total for "Tips" so you can add the tips from the customer right on the sales receipt. It will map to the account needed.
Then, you distribute the tips in your payroll via the instructions given above or via check - using the Undistributed Tips account.