Once you have created a modifier group or upsell group, you can add them to your products. Follow the steps below to learn how.
Use a POS? If so, link the products together on your POS and then sync your products.
Step 1. First, navigate to your 
Products page.
Step 2. Select the ⋮ button ① next to the product and choose Edit ②.
Step 3. Select the Add a modifier group or Add an upsell group button.
Step 4. Select the modifier/upsell group(s).
Step 5. Select the Add button.
