This is the reply I got from the lvvta forum site;
"The exact position for controls is not defined, there is just the principle that all safety-related operating systems must be able to be reached, and operated or adjusted, by a driver within an average range of height, whilst in the normal seated position.
There’s also a general principle that a vehicle should not be built such that no-one but the owner can drive or ride it, so the controls should retain a level of familiarity."
I like this, it is sensible, and vague enough to allow for some creativity. And I guess it will also depend on where you go for a wof as well.