How can I fold the unfolded metal ironing board?

Question

I found this unfolded metal ironing board, but can't figure out how to fold it. There is a metal rod, but I can't make it move. Please help!

Answer 1

. . .or, there may be arched metal pieces on the underneath that you push in to release the legs.

Answer 2

there should be a "handle" shaped part to that rod at the center  underside edge of the board. you have your thumb on the board & reach your fingers under & push up on the handle