In the event a student has a recorded Allergy you can assign a Allergy safe menu to the student so they can pick from safe products.
This article will teach you...
How to assign an Allergy safe Menu Template to a Student.
For Meal Selection users, go to Payments > Students... For Meal Manager users, go to Meals > Students...
In the Students page > select an Area/Site  > select a Student 
In the Edit Student window go to the Student tab  make sure the Type  drop-down is set to Student Menu. Select a menu template from the Menu Template  drop-down to assign the relevant allergy safe menu template e.g. Gluten Free Menu #1 template and click Save .
When a Student Menu template is assigned to the Student details it will override any Theme day menus applied globally by the admin user.