Payroll & Billing covers getting your people's hours to your payroll software and paying subcontractors: the Payroll Hub and pay runs, allowances, and the subcontractor work (work logs, rate cards, suppliers, RCTIs and claims). Your workspace's own subscription and SMS credits are explained here too; in the app they sit under Account in the sidebar.
This is the finance and payroll team's home. Approvals from Site Operations flow into here before a pay run is reviewed. Subgrade gives budget estimates and export quantities; your payroll software does the tax, super, Single Touch Payroll, payslips and bank payments.