leg room

Hi All...I have been thinking of a change of van for a few months now from a for transit which I have had transits all my working life to a transporter...anyway I picked the transporter up about 3 weeks ago and as ye do join the vw site for some tips an advice...the van I have got is a 17 plate...

Has anyone either moved or know how to move the front drivers seat for more leg room, as I’ve got really long legs I can drive the van ok but would be better with more room.