How to setup an "waive fees" workflow

A super useful workflow is to use an order/customer tag to waive the return fees. For example, let's say a loyal customer makes a fuss about paying extra to make a return, and you want to allow them to return for free. Then you could setup the following workflow to grant them a free return after you add a tag to their order

This video explains in more depth how you can setup "waive fees" workflows: