The available files can be viewed, downloaded and edited in Tyre. Feel free to use as many as you want. I really hope that you feel some urge to create a new link yourself. Sending a route is a breeze with the Tyre program, but it can be done in other ways too.
If you want to create and deliver a new piece of route, you can pick up the route wherever you want. If there are several routes departing from one place, that is no problem. It only offers more possibilities.
There is this one request: if possible, connect to one of the existing starting or ending points. It is best if the links connect directly to each other as much as possible.