Staff agree to change — a beastly bunch! (9)
I believe the answer is:
'a beastly bunch' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'staff agree to change' is the wordplay.
I cannot quite see how this works, but
'staff' could be 'men' (I've seen this in other clues) and 'men' is located in the answer.
'change' could be 'age' (ageing is a kind of changing) and 'age' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for menagerie that I've seen before include "A lot of wild animals" , "strange collection of people" , "collected animals" , "Beastly lot" , "lots of animals" .)