how to create slower viewing speed for completed stop motion

first ever stop motion created in istopmotion for i-pad, everything worked great but how do I slow down the viewing speed. Is this something that needs to be done in iMovie? didn’t see an option in istopmotion.

You can adjust the framerate of the animation by clicking the wrench on the bottom left. By increasing the framerate, playback will be quicker, by decreasing the rate, it will slow down.