An easy way to get drivers sorted at other depots is either buy a sat nav type system with the route fully programmed in ( I know it’s a game and hardy to do in reality but the bus simulator games have exactly that and am fairly sure technology exists if you can track a bus off bus times ) or hire drivers across multiple depots where they split there time. Stagecoach seem to manage it with certain drivers across Hartlepool Stockton and Newcastle so no reason Go North East couldn’t do it.