If you want to skip payroll for an employee for a specific month -
Go to Run Payroll.
If required, select the payroll month for which you want to skip the employee's payroll.
If the payroll is already finalized, click on the "make changes" button.
Search for the employee by their name.
Click on the "edit" button, and then click on "do not pay".
If you want to exclude an employee from all future payroll indefinitely -
Go to People.
Click on the employee name to go to their profile.
Scoll to the bottom of the page, and click on "stop salary".