Go to Menus > left mouse click a Menu type > click Add Menu 
In the Add Menu pop-up enter a Description  (e.g. Gluten Free Menu #1), set the Category  and Availability check boxes  as required, click Save.
When you have created a Menu click the new Menu and use the Menu Items  lists to populate the menu then click Save .
Click the Report  button to generate a Report.pdf document which will be automatically downloaded; this will include a breakdown of the Menu Items Allergens.