assign one of my devices permanently to the living room Xf1 pods

I have the Xfinity Xf1 pods   One in the living room. One in both bedrooms.

 

All my devices are connected to the bedroom Xf1 pods

 

For example I have amazon firestick & the one of the pods in the living room.

 

But the firestick shows up on only the modem. Not any of the pods

 

I know that the Xfinity Xf1 pods works on a mesh network system but I want to override it and assign one of my devices permanently to the living room Xf1 pods

 

How do I get instructions on how to do it.