You can add and remove items from your store-specific menu sections in Toast; however, you cannot add/remove items to shared menus (printed menu sections). Making edits to store-specific menus must be done in "Advanced Properties", if you try to change your menu in "Edit Menu" you will not be able to.
Menu sections that can be edited at store level will appear in blue with all greyed-out sections being controlled by corporate. You can edit nearly all alcohol menus and your local favorite sections.
The following guides will show you how to make these changes to your alcohol menus and the same steps can be used for your local favorites menu.
Beef's - Editing your alcohol menu
Brass - Editing your alcohol menu
How to remove items from your store-specific menu