Hi there,
At the moment we can only add timesheets to invoice created in QuickBooks Online through the Weekly or Single Timesheet.
To create a timesheet in QBO:
- Click on the + New option.
- Select Single time activity or Weekly Timesheet.
- Enter a date, from the dropdown select the name of the employee or supplier.
- Complete other fields
- Click on Save or Save and Close.
Then, to add the timesheet to the invoice.
- Click on + New.
- Click on Invoice.
- Select the customer name.
- There will be a pop up in the side to add Billable time.
- Click on Add.
- Fill out other fields to complete the invoice.
- Click on Save or Save and close.
That's it! You've created billable time in QBO. You can also check this link to learn more about single and weekly timesheet in QBO.
Post again in the Community if you need more help with timesheets.