The good news is: Regardless of labels (like Overhead versus G&A), so long as expenses are recorded in the same account, consistently, in like circumstances, the label or pool might not matter. The difference between Overhead and G&A depend on how your company, consistently records a type of expense.
Noun. 1. mover and shaker-a person who wields power and influence; a shaker of traditional beliefs; movers and shakers in the business world. shaker. individual, mortal, person, somebody, someone, soul-a human being; there was too much for one person to do.
This Crain's directory of Chicago's movers and shakers lists 542 people whose names you need to know, from Fortune 500 CEOs to civic leaders to philanthropists.