How exactly does auto trading with Interactive Brokers work?

What I mean is does C2 require my IB log in and passwords? I’m concerned that I need to give up my password to a third party. I have several accounts linked under my IB login and I’m also trading one of the linked accounts myself, so I don’t want C2 auto-trade to have full access to everything.

They don’t have access to your password\login.
You sign a document that only lists your account number. and they do everything behind the scenes with IB directly.