You can create or edit a meal on the "Edit meal" or over the ingredient name.

You can save or cancel the changes in "Save" or "Cancel" option, respectively, which is located at the bottom of the window:

Meals plan
The meals are disposed in chronological order. If you do not enter your meals properly (throughout the day), these are not logically organized. 

Remove meal
The meal can be deleted with the "Delete" option. FOR EXAMPLE, clicking "Balance breakfast and morning snack", you can check the meal balance.

Basic Info
At the top right of the meal window, you can find the energy value (E) and the amount of macronutrients (CH - carbohydrate, F - fat, P - proteins) that are included in the meal.