Group of people discussing plane crash (5)

I believe the answer is:

panel

I'm a little stuck... Click here to teach me more about this clue!

'group of' is the definition.
'panel' can be an answer for 'group' (I have seen 'Group of judges ' mean 'panel' so perhaps 'group' could also mean 'panel'). I'm not sure about the 'of' bit.

'people discussing plane crash' is the wordplay.
'plane' anagrams to 'PANEL'.
But, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for panel that I've seen before include "Wall mounting" , "regularly beaten by bodywork experts?" , "Instrument board; investigating group" , "Group of experts etc" , "Bordered rectangle (in door etc)" .)

I've seen this clue in The Globe and Mail.

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