fisher price safe voyage car seat -stage0......INSTRUCTIONS?

[pellmell]

I have been given one and can't understand how the safety catch on the back works

1 press
2 lift
I can't understand what these actually do or if they are actually broken
Can anyone have a look on theirs and explain to me how they work ?

tia

oops that was wrong
they say
1 press
2 slide

Hi I had one of these and it came with instructions for the britax baby sure seat

www.britax.co.uk/videoandguides/Britax_Babysure_user%20guide.pdf

Hope this helps Bex