I found the following pool: http://pool.nxtcrypto.org/howto.html
But I'm a bit unclear on these instructions:
To claim your earnings, simply send an AM (can be empty or put whatever you want in there) to the pool account 1460178482 and after this AM has 1440 comfirmations, your confirmed earnings will be sent to you, minus NXT transfer fee.
What do they mean by "simply send an AM"? What is AM?
On the lease nxt page, it says I can attach a message. Do I just attach it during the lease transaction? Or do I have to send a separate empty message to the pool account after sending the leased funds?