Oh really, thank for your alert. I am new herein, just a very little knowledge about mining. So a worker in the pool actually is a rig, isn't it?
No, you are wrong, bro. Actually, one worker (it's only a name) can have a number of rigs, maybe 10, 20 or hundreds if it is a mining farm like Bitman, Genesis Mining, etc. You should not be misuderstand this basic knowledge.