Modern Retail offers a variety of features to help enable your customers to get their orders in whatever way is most convenient for them. BigCommerce supports all of these features (Curbside & In-Store Pickup, Local Delivery, and Ship from Store), however there are some quirks with how returns are handled.
Curbside, In-Store Pickup, and Local Delivery Returns
Curbside & In-Store Pickup returns can be normally processed. The return will have to occur in-store, and that return will be sent from the Admin Panel to your POS system. This will essentially function like a normal return. Likewise, Local Delivery returns work the same way
Ship from Store Returns
Ship from Store Returns work a little differently from the other methods listed here. They can be done through BigCommerce, however the return will not go down to your POS system. This is a unique quirk caused by how BigCommerce handles returns, and may change in the future.
As always, if you have any questions, please ask your Project Manager or submit a Support request.