On the Staff accounts page (click Settings > Staff Management > Staff Accounts) you can:
create staff
assign roles
set hourly pay rates
On the Teachers/instructors page (click Studio Setup > Teachers / Instructors) you can:
add new teachers
assign default pay rates (as in, what they'll be paid per class)
pull payroll reports for classes and appointments
The video below covers all of the above, plus how to:
pull a combined payroll report
pull a time tracking report