First, place endless verse on heads (7)
I believe the answer is:
leaders
'heads' is the definition.
(I've seen this in another clue)
'first place endless verse on' is the wordplay.
'first place' becomes 'lead' (I've seen this in another clue).
'endless' says to take the centre.
'on' is a charade indicator (letters next to each other).
The central letters of 'verse' are 'ers'.
'lead'+'ers'='LEADERS'
(Other definitions for leaders that I've seen before include "Guides" , "Chiefs" , "Bosses" , "They take the initiative and direct others" , "People to follow" .)