Physical button to node red

I have a NR flow triggered by a Lovelace dashboard button which is built off a HA helper, and it all works fine. I also have some zigbee buttons which I would like to use as triggers but I can’t for the life of me figure out how to use them, ie make HA turn a light on etc - they don’t create any entities?

Had a good read around but I am still stuck!

Probably events.
Listen for events in developer tools and see if that is what happens when you press the remote.
If it is then use the events node and filter it to the specific event you are looking for.