Does it change...?
The next subclause—again, if I'm going a little too far ahead, that's fine; we can address it later—says:
(2) The Minister may determine and amend the terms of reference of the advisory body.
That, to me, seems to say that the minister can, given his mandate, do whatever he wants. Does adding the word “independent” really change any of that? Usually when something's independent, the minister just can't switch the terms of reference around.