adding a 2nd router to panoramic wifi

I have a 2nd router (Arris DG2640) that i paid off from Cox and upgraded to the Panoramic wifi Gateway. Is it possible to use the Arris as a router for the other end of the house? My cable cord is connected to the gateway in the living room on one end of the house and guest bedroom is on the other end where I have my PS4, Firestick, Xbox are (Game Room). If so, how can I set this up?

Thanks.