You can just use Max's Backburner, a free and built-in network rendering tool. You don't need to say which frames go on which machine, Backburner will divide the frames up between any and all connected machines by itself. There are other more sophisticated (but paid for) network render management solutions too.
Remember, you will need a Corona Node license to render on the second machine. This is either included for you (because you subscribed before Corona 8 was released and have maintained your subscription), or you will need to purchase one if you don't have the historically included nodes.