Modifier groups allow for the customization of items in an order by adding modifiers such as extras or substitutions.
Click Items & Orders.
Select Modifier groups.
Select Add modifier group.
Add a name.
Select Add modifier.
Choose an existing modifier from the dropdown box.
Select Add modifier to add more modifiers to the modifier group.
Set modifier group rules by checking Optional or Required.
Select Pre Modifier group if required.
Select Settings.
Save.