You can convert your shifts to timesheets and run payroll.
To replicate shifts as timesheets, go to the Timesheets => Team Timesheets page.
Then click on the Tools dropdown and select the Replicate Shifts as Timesheets option.
You will see a pop-out window like the one below that shows a preview of the shifts that will be copied.
Click the Replicate button to copy shifts as timesheets and you're done!