It would require changing a decent bit of the logic handling the equipment system. Plus if you need multiple UI buttons to display each of the items, then the equipped items will have to talk to the UI layer on their own as well.
So you’d have to familiarize yourself with how the BPC_EquipmentController works. It can handle different types of equipment, so that part won’t be any trouble. But you’ll have to change the variable EquippedItemDataContainer into an array and then use it based on the selected item index.