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The worker claims 8 hours:
An Administrator realises they should have claimed 10 hours and wants a timesheet showing 10 hours, so chooses the Part Credit and Reinvoice option and enters 10 hours against the appropriate rate:
The system automatically creates a new negative timesheet to negate the original:
It also creates a new timesheet with the correct hours:
If you chose the Process Invoicing option, the negative timesheet will have a credit note against it and the adjustment timesheet will have an invoice:
In this example the worker has a fixed addition of £10 per invoice configured on his record and this was included on the generated self-bill invoice: