FerrumDeSocietate

Hello all, Been a rambler on these forums for a little bit but never a member as i had no need to post... but i am a little bit stumped. I recently aquired a Singer 211w155. I got a table and am in the process of setting it up. Trouble is, i dont know where the knee lift is supposed to go. I cant find the "spot" where this lift arm is supposed to press to release the foot pressure. I have included a few photos of the machine, and the table. Any help here would be appreciated as all the books and manuals are, lets just say a little outdated and the images look like a drunk 5 year old drew them. If anyone can point me in the right direction i would greatly appreciate it.