Are these your controllable sims that you have made to go shopping or sims that are visiting your controllable sim's owned business?
I meant the former. Sometimes I send my playables to another Sim's owned business to pick up some cooked meals. (Well... I know I can cook it myself at home much quicker than that, but then I HATE cooking in RL. I wish I could buy home-cooked meals from shops as in SimWorld.) I put a clothing rack, a jewelry rack and a grocery fridge in every owned business lot so that visiting playables can do one-stop shopping.