If it has a manual button you could press it on the hour, 12p, 1p, then it should run every two hours after that. Some rotate constantly so marking the rods, eggs etc helps to be able to tell when/if they rotated.I had some major issues with my Incubator not heating up correctly if I take it out of the foam box like I did on my previous hatch, so I had to put the Styrofoam back on it. It's still settling in abd heating up, so Im gonna wait till later to open it and see. I wish the incubator would display what time they're going to turn the eggs.