Had a user with 20 rigs running EquiMiner. But any time he wanted to change coin, he had to select for each of the 8 GPU's on each rig. Updated version of EquiMiner allows users to look to a .json config file. Set all your miners to look at 1 file on your network, and now you just need to update that 1 file. All your EquiMiners will auto switch to the new coin!