You can add your custom invoices in ArchiOffice/EngineerOffice 20xx in the following way:
1. Log in to ArchiOffice and go to Preferences>Custom>Invoices.
2. Click on the green + icon.
3. Click Choose File to browse to the location of the custom invoice file location.
4. Select the custom invoice (.rpc) and click Open.
5. When selected, click Add.
6. This invoice is saved in the Custom folder. Click OK.
7. Check the DB_New Invoice box and then click Save.
8. To use the newly added custom invoice, go to Projects>Billing>Options->Invoice Output and select your custom invoice as the Invoice Template.
9. Click Action-Save.
