A shift from 09:00 to 17:00 is 8 hours. Labor cost is hours times the hourly wage. Labor percent is that cost divided by projected sales. Forty hours at $15 is $600. Against $4,000 in sales, labor is 15%.
The schedule builder, including availability notes and a printable text version, is part of the one-time pack. Names typed into the schedule stay in this browser.