I'm not sure what directions you want to show up. There is no starting address to show directions for. If you want directions to show up you will have to set up a form for getting the starting address. Here is a solution recipe that will help you setup the form for the starting address:
If you are looking to add static directions from a certain predetermined location, here is a solution recipe for that:
If I'm misunderstanding something, could you please clarify what directions you are looking for?