So to continue the IT parallel, that'd be setup (hiring and training) and maintenance/debugging (hr complaints and problem resolving) imo. My personal hunch would be that viewing the whole thing in a systems context, the EOs would be engineering. After all, they decide how the company is run at a top level, and either assemble a functioning "people stack" or set guidelines for doing so. In that vein, components/prospective employees are churned out by the education system as a broader whole, and the raw material for that...alright, i think that's taking the metaphor far enough.