If you'd like to set up add sub-item selection for the item, please refer to the following steps and modify in backhouse :
Login Backhouse > Online Menu > Item/Set > find the item that you want to add on sub-item option > Click Edit
Click Add a modifier group > Key in this sub-item group's name
Rules set up "Minimum : 1 ; Maxima : 1" (Meaning that the customer must choose at least 1 option and can only choose 1 option ; can customized the rules depended on your demand)
If the option can be choose more then one time, please ☑️ Can a modifier be selected more than 1?
If the option had already created, please click Add an exist item ; if not, please click Create a New Item
Create a New Item tutorial
After add in an item as a option, you can set up the add on price of this sub-item on right and hit Save
In the end, hit Save again then you will done the sub-item option set up
Online Ordering Page will show as :
