Installing a Second Streaming Stick+ for a second TV

Just set up the second Roku device like you did the first.  If you link it to your existing account which I highly recommend, all of your channels from the first device will also appear on the second stick.  You may have to login to some of the channels to use them.  Please be aware that if you remove a channel from one device it will be removed from all devices linked to that account.  You can view the same channel on both devices at the same time.  Many apps limit the number of devices you can view at the same time often to three.  I have six Roku devices linked to the same account.  All six could be used at the same time but not with the same channel because of limits set by the channel.