How do i add time activity to an invoice

Hello, @racershart.

We will be able to add the time activity created when it is marked as billable to a customer.

Here's how:

1. Select either Single time activity or Weekly timesheet form the Plus (+) icon.
2. Fill in the necessary information on the timesheet page, then put a check-mark beside Billable.
3. Choose a customer beside Customer/Project section.
4. Save the timesheet.

To add the time activity when creating an invoice.

1. Tap on Invoice under Customers from the Plus (+) icon.
2. Pick the customer's name under the Customer, then look for the billable time at the right side of the page.
3. Click on Add, then fill in the rest of the invoice details.
4. Hit Save or Save and close to record the transaction.

To learn more about timesheets in QuickBooks Online, read this article: Timesheet setup: QuickBooks Online and TSheets.

Get back to me if you have any other questions. I'm a few clicks away to help. Have a great day!