How to issue an invoice for services rendered

Before issuing an invoice, insure that the program is in the 'Issuing' mode as shown by the green arrow in the upper right corner of the program screen.
Clicking on 'invoice for services' will bring up a dialog screen.
It is then possible to search for an existing customer, or to create a new one. After completing the mandatory fields it is then possible to insert the list of services and the VAT rate in the document.
When the invoice is complete, click on OK.

The program will ask whether or not the invoice needs to be printed immediately.