Do you know how to setup mining on a second computer. There is a big warning about configuring the second as a witness in the How to mine documentation.

You must not specify a witness with the same account name, your-account-name, on more than one steemd instance that has the necessary private key. If this happens then both instances of steemd will produce a block at the same time. Other nodes on the network will see this double-signing and submit a proof to the network that will allow them to claim your entire account balance.

I looked but I can't find anything on setting up a non-witness miner.