The Serves/Time tab allows you to store details of how many servings you can get out of a recipe, and how long it takes to prepare and cook.

The serves field allows you to use any characters, so you can add things like 2 to 4 or 4-5. This does have an impact on the ability to scale recipes. So you should consider this if you wish to scale a recipe.

The time fields allow you to specify any unit of time that you wish to use. The total time isn't calculated using the values in prep and cooking time, as you may prep while you are cooking.