Sofa bed help..

Hello everyone and thank you all who welcomed us!!
We are still learning about our Hobby and we found a little problem.: We don't know how to assemble the sofa bed.
I am attaching a picture of how we assembled it and the loosing pieces we don't know where to put.
Thanks in advance!

Hallo Javi,
pull the seat cushion to the middle of the table together and fill the vacant spaces with the folded backrests. The backs are to turn so that the wider wedge shape side facing out. Behind the driver's seat can fold down the wooden board. Then the head end is slightly higher.