In Thr!ve, we call this "Pure" labor. You can trigger the "Pure" labor calculation by setting up a job type to be excluded from Labor calculations.
Navigate to Manager Home > Configuration > Employees. Select a Job Type.
Check the box "Exclude from Labor Calculations".
Save your changes.
This will exclude this employee from Labor Sales % and Labor Productivity calculations. You'll still see their wages on the Payroll report.
When you have a job type configured as excluded, you'll see the "Pure" labor % option in several places:
Manager Home Sales Report:
Store Summary Report, Labor Section
Labor Sales Report