If you add a second pool to your miner configuration, it acts as a backup.
Meaning the miner will be active on only one pool at a time.
Whichever pool is in the top slot will have priority.
No restarts are necessary, just save the settings and you should be good to go.
Thanks.
I must be doing something wrong. For some reason, when I saved and applied, it didn't show up in miner status. The
miner stopped eventually and beeped. I turned it off and on again and I'm using the old pool.
I did it twice like this and it didn't take. One possibility may be that my new BTC address with my green wallet is wrong. I don't
like the way addresses are re-assigned, it seems like a hack. I noticed coinbase does this, and with green wallet, when I
booted up the app, the address it listed for me was different than the one they gave me last time.