If you have large number of menu items within a category, you can use the PAGE setting enable pagination.  If you wish to use the name instead of the page number you can also do by entering the values in PAGE NAMES.

By default, in the system, you can only select one of the same type of modifier item.  However for certain cases, you may want to select more than one of the same and possible group them or divide them to sections. In order to archive, you can use the SINGLE / MULTI MODE feature.   Once Read more about Multi Modifier Selection and Group Divider[…]