The crafting menu will list all recipes the player (or menu user) has in their inventory - i.e. when the recipe is collected via the item collector it'll be available in the menu.
Just make sure your crafting recipe has a crafting type selected that's also displayed by your menu.
Add Recipe is a node in schematics, basically does the same as collecting via an item collector (or other means to add items to inventories), but comes with some more options (e.g. adding recipes of a type, etc.).
However, if you want to have an item unlock recipes when used, like a crafting scroll teaching a recipe, you need to set up a useable item that uses a schematic to add the recipe to the player (e.g. via Add Recipe node).