Sorry dude its been a long time since I have used the nicehash service my self. There will do doubt be bids on YouTube.
I don't think it's possible yet. I watched some videos, and I sent a support ticket to NH. It looks like you need a username, password, and worker to link the pool. I don't think our pools have that - at least, I can't see a place to log in to set that info up on our pools.