At the top right of the employee’s timesheet list, click Approve.
Continue reviewing timesheets, and for each, click Approve, or click the dropdown arrow () to access the Reject option. (Note: The Reject option only displays if you have selected "Employees submit their timesheets" in TSheets. See: How to Set Up Timesheet Submission and Approvals)
At the bottom right, you have three options to Accept the timesheets (Accept means the timesheets will be sent to the Weekly Timesheets in QBO):
Accept and close: Returns you to the QBO home screen.
Accept and create invoice: Opens Invoicing so you can create a new invoice.
Accept and run payroll: Opens Payroll so you can run payroll.