Yes, you can change the order of items within a category and the order that your categories appear in the Inventory appinventory-app-store_4376970981672244184_200x200.png and the Register appregister-app-store_7939097640983943943_200x200.png. See Rearrange and search for categories for instructions.

Reference Site: https://help.clover.com/faq/can-i-change-the-order-of-my-items/