Recipe ingredients are added using the bottom section of the program window. There are tabs for grains and other fermentables, hops and miscellaneous ingredients. Below the ingredient list there are fields to enter in the details of the ingredient. To the right of this are three push buttons.
The blue "plus" button adds a new ingredient to the list. The green "check" button changes a selected ingredient in the list. And the red "X" button removes an ingredient from the list.
The Notes tab of this section allows you to enter notes on the recipe and batches. These could be specific brewing procedures, brewing and bottling dates, or measured gravity. They are saved along with the recipe, but otherwise do not affect it.