Lead everyone around place to cooperate (4,4)
I believe the answer is:
play ball
'cooperate' is the definition.
(I've seen this before)
'lead everyone around place' is the wordplay.
'lead' becomes 'Pb' (Pb is the chemical symbol for lead).
'everyone' becomes 'all' (all people).
'around' is an insertion indicator.
'place' becomes 'lay' (synonyms).
'pb'+'all'='pball'
'pball' enclosing 'lay' is 'PLAY BALL'.
'to' acts as a link.
(Other definitions for play ball that I've seen before include "perform service in court" , "meet a delivery?" , "Agree to comply with someone else's rules" , "Most boys love to" , "Co-operate" .)