1. Click on Menu in top left of the app (3 bars) and then choose Menu to snooze or disable Main Items on your Menu

2. Tap Snooze next to the item you want to remove.

Select how long you want to remove the item from displaying. 

2. You can search for a modifier by name.  If more than one modifier has the same name (e.g. there are multiple modifiers for Pepperoni) you can choose to "select all" and "Snooze all Selected"