Shop lifters

Hey Reddit, I have a question about shoplifting. I work at a small convenience store in a pretty rough part of the neighborhood and my manager wants me to stop shoplifters as they go out the door or when they make the door go off. I’m a cashier and basically every time the security buzzer goes off, I have to follow that customer and stop them. Is this allowed? I’m just a cashier. I just started not too long ago and I heard them talking about not giving hours to those that don’t stop them.