Since we can only have (1) "Add Custom Sale: button in POS, its imperative that you allow us to assign the correct tax override to this item.
In an ideal world we should be able to have several of these buttons for different product collections, which would solve the problem...but at the very least PLEASE allow us to assign a sales tax override.
We have been overcharging customers for a year now every time we use this button. PLEASE HELP US!
I have requested this option multiple =times and have been greeted with silence. Please respond to customer requests, we have been patient, its now time to fix this glaring issue.