Bostitch makes a wide variety of staplers for almost every kind of stapling job. The heavy duty line of staplers only require that a tab be unhooked to slide the staple cavity out for reloading. The Bostitch desk stapler on the other hand, requires opening the stapler to load staples. Although opening the stapler is a straight forward process, it can be confusing if you have never opened a stapler before.
Pick up the Bostitch stapler with one hand on the base of the stapler on the other hand around the top portion of the stapler. Pull the front of both the base and top of the stapler away from each other. The top of the stapler and the base rotate on a pin on the back.
Grasp the lower portion of the upper portion of stapler with your fingertips. Grasp the top of the upper portion with your other hand.
Pull the top of the upper portion away from the lower portion to reveal the cavity for the staples. Load a strand of staples into the cavity with the points facing down.
Close the upper portion over the lower portion until they snap together. Fold the upper portion of the stapler back over the base until it clicks into position.