Adding a mesh router

I have just installed a Starlink dish and router. It's working well (I get a download speed of about 220 Mbps).

I also had included with the package a mesh router and an ethernet adapter. Am I correct in assuming that the mesh roouter is for extending the signal to another part of the house?

I would be grateful if someone could confirm my assumption and explain (for someone who is not tech savvy) how you set it up.

Thank you.