Location of refill bung on auto gearbox 2.2dti

Hi there I'm trying to locate the filler bung on the auto gearbox I can find the drain plug but no refill can any one help thanks

From memory it's on the side higher up than the drain plug

Thanks and do you have to jack it up to fill it right up or not

I didn't, but my auto was lifted 3" on the suspension.
Needs to be on level ground. You fill it up until it starts to drip out, work it through the gears, and top it up, take it for a drive, top it up. Should get it suitably filled.