The very first thing would be to call the police as soon as possible. If anyone was hurt, make sure to seek our medical attention as well. Ask any one in the store to stay, as they may be witnesses. Stop the normal store functions. Recall any details pertaining the incident and write it down so that you don’t forget, try to estimate how much was stolen & what was stolen. Report all this information. Lastly, I would say that the staff members should think of any safety measures that could be applied to keep the store from being robbed again. Hope this helps:)