Cn anyone advise how does the GDS (garage data systems) software link into Quickbooks, thanks.

Userkeith-hume, 

Welcome to the Community page, 

If it is not listed in the apps section of Quickbooks you will then have to speak to their support about it. 

@userkeith-hume 

We noticed it supports QuickBooks and yet no technical guide available on their website. You should contact their support for assistance.