I had a little shop time this afternoon and put the lower arms on the loop.
As I push the center up the tips swing down and in. the lower arms swing up and the small section between the arm tips fold down over the lower arm tips.
My string slipped and gave a little slack. When it is secure it will fold into a nice little package. I left the lower arms longer while adjusting them. I will trim them and the the dowel before I put the wire on. I should have the wire Friday.
note: the lower arms are attached with small hinges.