motion (for) (one) to (do something)
To use body language to instruct or direct one to do something. She motioned to me to be quiet as I came into the room. I motioned for the stage assistant to lower the curtains.
motion to (one)
To use gestures to communicate something to one or to get one's attention. She motioned to me to be quiet as I came into the room. I tried to motion to the teacher through the window, but she didn't notice me.
motion to someone
to make some sort of hand signal to a person. Did you motion to me? What do you want? I did not motion to you.