From the home menu, open the clients window, your selected client then open the AVETMISS tab

You will find the "Given Names Override" and the "Surname Override" fields at the location shown in the image below.
Use these fields whenever the client's name is too long to fit in the main tab fields.

IMPORTANT NOTE: PowerPro will use the name override fields (if not empty) when issuing AQF Parchments and when reporting AVETMISS and RAPT