Kind of him to bid goodbye in the end (4)

I believe the answer is:

mode

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'kind' is the definition.
(I've seen this in another clue)

'him to bid goodbye in the end' is the wordplay.
'him' becomes 'mo' (I can't justify this - if you can you should give a lot more credence to this answer).
'in the end' indicates one should take the final letters.
The last letters of 'bid goodbye' are 'de'.
'mo'+'de'='MODE'

'of' is the link.

Can you help me to learn more?

(Other definitions for mode that I've seen before include "Trend" , "Way of operating" , "Fashion in dome" , "Manner of dome" , "Way, style" .)

I've seen this clue in the Sydney Morning Herald.

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