Communicate ignition edge to Central gateway

I’m thinking to set up ignition edges with local client fallback and communicate with central gateways, what are the necessary configurations for these?

https://docs.inductiveautomation.com/display/DOC80/Local+Client+Fallback

Essentially all you need to do is check the option to set the local gateway (edge) to fallback via the local gateway webpage, and obviously make sure you have a connection to the main central gateway