I am glad you have reached out to the community, I will be more than happy to help. QuickBooks Online is designed to accommodate a variety of business needs.
There is a similar thread in the Community that explains the difference betweenExempt,Zero-rated, andOut of Scope. Please see below further information that you will find useful:
"The Out of Scope tax code is something you should assign to transactions that have no impact on your tax liability or returns. Unlike Exempt and Zero-rated which should be used according to the CRA's specifications, Out of Scope can be used to separate transactions from the system's tax tracking feature."