Set +/-, resume/cancel etc.
But, as far as I can see, it's only a speed limiter.
I just checked the standard spec online and no mention of a speed limiter function at all.
However, under 'optional extras' it mentions 'cruise control with speed limiter'
If it's got cruise, I'm damned if I know how to set it, I could only get the utterly pointless speed limiter function to work.
EDIT, found a previous post from another owner clarifying it's just a speed limiter.
I can't delete the post, mods can delete if you please.