Q1. Where can I adjust the settings for a single supplier credit note?
Click on the gear icon on the right side of the screen while creating a supplier credit note. A menu should show up.
Q2. How can I remove GST/VAT, item discount, or item quantity & unit from appearing in the supplier credit note?
To remove GST/VAT, you can adjust the default GST/VAT settings to No GST/VAT.
To remove item quantity & unit, you can disable both options under Item Attributes.