Need help with simulation

Trying to simulate an activity that occurs at a rate of 3 calls every two minutes for 12 hours. In my estimation, the rate of occurrence is 1 call every 40 seconds, but the simulator gives me 1 week of simulation when I input the data. Also, though i have three gateways in the model, the simulation data only shows one.

Would be extremely helpful if you’d share links to the simulator. Without context we cannot help you.