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.
shake verb (MOVE) B1 [ I or T ] to move backwards and forwards or up and down in quick, short movements, or to make something or someone do this: A young boy climbed into the apple tree and shook the branches so that the fruit fell down. Babies like toys that make a noise when they're shaken.