oil filter td4 help.would be gratefull for any answers

searched the forum and still lost. got the mechanics at work to get me oil filter ,and oil to do a change. got a sort of filter that goes inside something but dont know where,have the haynes manual but still confused. seen something at the front of engine with a large hex head on it .is this it would be gratefull for any help. thanks

Thas the bit col

thats the one, takes a 36mm socket to undo, lift the paper element out and fit a new un. sits between engine block and radiator on lhs looking at vehicle

cheers for that