Pastel Partner Printing Settings

[timazisqua]

Good Day

Need some assistance with printing in Pastel Partner Version 19.3.4

I need to
"Print Supporting Document" Only when ticked - and not print tax invoice copy as well (see attached pic)

My packing slip template is loaded as the supporting document, but i want to be able to print only that doc on demand, and not have multiple tax invoice copies printed with this.
Anyone know how to get around this?
Pastel settings are all based on wether the doc is updated, but our docs have changes throuout the day and need to be able to print on demand either the packing slip or the tax invoice.
Any assistance would be greatly appreciated

Regards
Martin