How does one utilize IMDb Pro? As far as a tool for actors...

I have it. I don't use it as much as I should.

It is a terrific research tool. Maybe you want to find out who is signed by an agency you want to work with - IMDB pro alllows you to see what talent they have signed currently and how you might fill an area of need; or maybe you use it to find out a casting director you know quite well is just beginning work on a tv show you'd love to get seen for but that you're sure you're agency doesn't have the connections to get you in the door, so you drop a personal note. Just a few ideas..

1. View your "competition".
Do a search for people fitting your criteria. Notice who their agent is.
2. Research people you are meeting with. (Agents or CDs)
3. For addresses.
I'm sure there is more that I'll think of.