Exactly - each Payroll Item will be classified if you go into that Payroll Item and choose 'Track Expenses by Job'. This is on top of choosing 'Job Costing, Class and Item tracking for pay cheque expenses' and choosing each 'Earnings item' in the Payroll & Employees preferences.
When you do both of these, and you classify each entry on the timesheet, the timesheet brings in those earnings items into your paycheque separated by Class, but QB will also then split all of your payroll expense items that are in the 'Other Payroll Items' section in proportionate % to the same classes used on your earnings items. For example, if 30% of your total wage items is going to Class A, then 30% of each of your expense items will also go to Class A.
