Your menus live in picklists on your site. If you have the privileges to do so, you
can go to Settings, and select Picklists. Here you will see the different picklist menus
that are available when creating documents. Clicking edit next to any picklist will
allow you to add, change, or remove any items and associated pricing. You can also
create new picklists with the “New Picklist” button. Keep in mind, you will want to
assign each picklist item the proper category (i.e food, beverage, other items) to
ensure tax, gratuity, and other fees are calculated properly when using the picklist.