How to add or edit a Students' Diet Type?

For Meal Selection users, go to Payments > Students...
For Meal Manager users, go to Meals > Students...

For students' with a specific Diet Type (e.g. Halal), click the Student [1] in the Students table, in the Edit Student window click the Diet Type tab [2] and click the relevant Diet type check box [3] option e.g. Halal before clicking click Save [4].