[jpthomas]

I'm sure that 99% of the time, you are correct that the underlings do most of the work in lining up an interview. The "celebrity media personalities" like Katie occasionally get involved when it involves a big catch.

[Cicero]

I would assume that somebody like Katie Couric has a veto over doing interviews. Her stooges are out there scrambling for notorious people to interview, but if she really, really doesn't want to do one, she has the power to refuse.