Placed, indeed, in a representative position (7)
I believe the answer is:
deputed
'placed indeed' is the definition.
The answer and definition can be both to do with social activities as well as being past participle verbs.
Maybe there's an association between them I don't understand?
'in a representative position' is the wordplay.
'in' is an insertion indicator.
'a representative' becomes 'deed' (I can't justify this - if you can you should give a lot more credence to this answer).
'position' becomes 'put' (synonyms).
'deed' going around 'put' is 'DEPUTED'.
Can you help me to learn more?
(Other definitions for deputed that I've seen before include "Assigned" , "Delegated" , "Made a representative" .)