How can I generate an invoice for a prepaid block of time without reducing hours?

How can I generate an invoice for a prepaid block of time without reducing the hours from the block balance?

The block balance is set when the contract is created.

The invoice should be created in your accounting system.

If you use the RangerMSP QuickBooks Link you can either create it directly in QuickBooks or create a labor charge in RangerMSP which is based on units (not hours or it will reduce the block balance). Set the price for the charge and set its status to Billable.

After the charge is entered for this contract you can generate a QuickBooks invoice for it from RangerMSP using the 'QuickBooks' menu in the Contract window.

Note: To add a unit based labor charge you should use a unit based labor item.
You can learn more about the different labor types and pricing options supported by RangerMSP by clicking here.