CITROËN C4 Picasso Owner's Handbook Manual page 246

Safety
Child seat at the rear
"Rearward facing"
When a "rearward facing" child seat is installed
on a rear passenger seat, move the vehicle's
front seat forwards and straighten the backrest
so that the "rearward facing" child seat does
not touch the vehicle's front seat.
246
"Forward facing"
When a "forward facing" child seat is installed
on a rear passenger seat , move the vehicle's
front seat forwards and straighten the backrest
so that the legs of the child in the "forward
facing" child seat do not touch the vehicle's
front seat.
Seats in the 3
When a child seat is installed on a 3
passenger seat , move the 2 row seat
nd
forwards and straighten the backrest so that the
child seat and the legs of the child do not touch
the 2 row seat.
nd
A child seat with a stay must never be installed
on a 3 row passenger seat.
rd
row
rd
row
rd