@Kurt_M 

As others have said, I categorically do not want to use third party apps, neither am I doing so!!!

QuickBooks do not have a viable stock control solution in my opinion, had we known this we would have not signed up to Quick Books.

 "I recommend contacting your 3rd party app support. This way, they can provide you with a step-by-step process."

As its your software, then please do this!