How to control min and max choice of a modifiers?

Steps to control the min. and max choice of the modifier.

1. Open the "ManageApp".
2. From the navigation menu (three lines) on the top left, select "Online Menu".
3. Click on the group (ex, Salad), select Item
4. Click on Edit icon on the top right, select edit.
5. Scroll down and click on modifier which you want to edit
6. Navigate the option for "Required/Optional"
   
7. Mark modifier required/optional and set the min and max.
8. Click "Back" and then "Save"