Front passenger side door trim removal

Hello all,

I have a wee annoying zzzz-zzzz 'rattle' from the passenger door, only evident on the rougher tarmac roads. I have watched videos and looked at threads on how to remove the trim but I was wondering if, as the trim seems to need to be raised to be removed whther the little triangular grille at the front (no idea what it is for) needs to be removed first?

And if so, how does it come out/off?

Thanks in advance.

It looks as though the trim has been off before as one of the plastic clips at the bottom to the rear had disengaged from its slot

Sandy