Open the side bar menu then click on menu/inventory - Click on Categories - Click on create new Category Fill in the category information Click Save to create this category
Open the sidebar menu then click on Settings - Click on Discounts - Click on the Plus icon Fill in the discount information Click on Save to create this discount
Open the sidebar menu then click on menu/inventory - Click on Add-ons - Click on create new add-on Fill in the add-on information including the options Click on Save to create this add-on