Hello there, @cjf30316.
I'll share some insights about setting time increments using Enter Time/Single Activity in QuickBooks Desktop (QBDT), so you can manage your customers' billable time on invoices.
Once a time activity is billable, the time will automatically be pulled when preparing a customer's invoice. However, you'll have to manually set the time increment using Enter Time/Single Activity to enter the full timesheet data in QBDT.
You can refer to this article if you wish to learn more about creating timesheets in QBDT: Create and print timesheets in QuickBooks Desktop.
Also, you can run a Payroll Summary report to have a quick view of your payroll totals, including employee taxes and contributions. To do this, you may want to check out this article for the complete guide: Create a payroll summary report in QuickBooks.
Please feel free to leave a comment below if you have other concerns about managing billable time activity on invoices in QBDT. I'm always ready to help. Take care, @cjf30316.