Billable Time Offset on Ticket Time Entries

Allow technicians to log total time spent on a ticket while offsetting non-billable portions (e.g., lunch, breaks, drive time) so that:

• Actual time worked is recorded for reporting and utilization, and

• Billable time is reduced by a specified offset before invoicing.

Example use case:
A tech is on-site for 2.0 hours but takes a 0.5-hour lunch during that visit. They should be able to log 2.0 hours on the ticket, apply a 0.5-hour non-billable offset, and have the system:

• Show 2.0 hours total time on the ticket,

• Bill only 1.5 hours to the client, and

• Reflect both values in time reports.

Requested behavior:

• For each time entry, allow the user to set a “Billable Offset” (in minutes or decimal hours).

• Display both Total Time and Billable Time on the ticket and in reports.

• Ensure invoicing uses Billable Time, not Total Time.

• Include offset/non-billable time in internal reporting so we can still see true onsite/working duration.