With passengers I would always advise removing the pedals and stowing them under the seat - this will stop camera bags and clumsy feet from operating your pedals. They are marked L and R.
If your passenger is taking a camera then remove the cyclic handle too to give them more room to manoeuvre.
Another point - with slightly larger than average passengers you might find it useful to remove the collective lever too - I have found it can be accidentally obstructed. It can also be obstructed by jackets/fleeces etc.