How do I set a plane to not fall? I've been trying to set up a physics simulation so I can drop an Ico mesh on top of a plane and then collide they collide. However, I can't get the plane to stay in place, it just starts falling down with the Ico. It would be great if somebody could give me steps for how to keep the plane in place. I am relatively new to blender so sorry if I did not give you enough info. Thank you.
Change the ground plane's Rigid Body Type to Passive