Go to Admin > Menus > Menu Settings.
Menu settings allows you to choose whether or not you wish to activate the 'logical order list' function.
Selecting Yes enables the arrow tools to appear next to the relevant menu type or items. The arrow tools will allow you to easily move the menus / items around to place them in your prefered logical order. When the arrow tools are activated you simply click on 'up' or 'down' arrows to change the order.
The Catering Menu Order is the order that the Menus will appear on your event documents.