For a week lock up the back room. Make sure its empty first! Make everyone who would work from the back room at any time do their work at the counter or on the shop floor.
Yes, I know some will say it’s not possible. Try it and see what the shake up brings.
Too often, the back room is used as a refuge by people who don’t like dealing with customers. Retail is about dealing with customers. Place yourself closer to them and you’ve got a better chance of swerving their needs.
Great idea for retail only. No go for delivery shops. You alienate customers trying to sort problems at the counter, they don’t like waiting while you finish a stop/start on computer, they don’t care about your problem with home delivery that you are sorting out over the phone. They just want your undivided attention. If I or my staff had to do all my back room stuff at the counter I’d be here after hours.