When you enter non-billable time through time entry, do you assign it to a client and file, or are those fields left blank? Whether or not you post non-billable time against a client/file determines what you can do with it.

If it is posted against a blank client/file, it should only update staff statistics, but not be posted to the WIP file. Otherwise, the non-billable entry will appear in the WIP under a specific client/file, and can be final billed for 0.00. When creating a bill for that client, you can select the non-billable transaction from the list of outstanding time transactions. You are correct that there is no 'non-billable' code in this area; selection is based on any source code you may have attached to the NB time.

Regards,
Softrak Support