Networking etiquette with a group head in IB

I know this is similar to a recent thread, but I have a few different questions.

So I used my school's alumni network and got a call coming up with the Head of an IB group. The thing is that the group he is in charge of is not the one that I am most interested in. People have suggested in other threads to ask him for other contacts that I can network with. So is it okay for me to ask for contacts in other groups? Will this come off as disrespectful?

Also, he hasn't asked for my resume. Should I take the initiative and send it to him prior to our call so that he can see my qualifications? Maybe attach it to a thank you note after the call? Or only if he asks for it?