Almost all cash registers have a button or switch that when its clicked or pushed it opens the cash register draw. This button or switch is usually located under the register and towards the back in the middle. Usually its a switch so you need to click it and it will open. If the register is on press a button that says "Amount Tend Total," it is the biggest button there usually blue. Another way is to press a button the it above the biggest button (Amount Tend Total) and it say, " #/st/ns." I gave a picture so you know how the button looks.