Primary Billing and Add On Billing in 11-2 Work Orders/Invoices/Credits

The first time you enter an assembly, it defaults to P (for Primary), but subsequent entries for the same work order default to A (for Add On) so that you aren’t billing for travel time more than once.

If you do not want a subsequent entry to be an add on billing, you can toggle the A to P by double-clicking on the A.