Charging Dock for Naga Epic Chroma

I use a Naga Epic Chroma I bought new in 2015. It is working fine, but I know it will not forever. I bought a used Naga Epic Chroma without a Dock, but it has the USB cable. I plugged the used one I bought into a USB port and it worked immediately, using the Razer Synapse profile I had loaded. When I unplugged the used mouse from the cable it would not work Wirelessly. It holds a charge fine, and is charged. I tried putting the new used mouse in the charging dock, and it charges fine. I tried switching cables, and the new used mouse works using both. It seems maybe I need to pair the used mouse to the charging dock. My questions are this: - Can 2 different Naga Epic Chroma Mice use the same Charging Dock Wireless function? - Do I need to follow a pairing procedure, if so what is that procedure? - Can only one mouse be registered to the wireless function of the dock? My goal is to get a couple of used mice, plus mine, and use on one dock. If I can not do this, then I will change my plans. All responses are appreciated.