I’m going to be putting together some details about advanced features like this. For now the best resource is the Runway website and guides:
http://guide.runwaywp.com/
http://runwaywp.com/
If you have questions you can always come here to ask. I’m not great about making documentation or videos, although I’m really pushing myself to get more of these out for Vellum and Runway soon, but I’m great at responding to specific questions in formats like this. I hope that can help get you the information you need until I can release more resources.
Thanks!