Bound to include everybody, agreed (7)
I believe the answer is:
tallied
'agreed' is the definition.
('tally' can be a synonym of 'agree')
'bound to include everybody' is the wordplay.
'bound' becomes 'tied' (I've seen this before).
'to include' is an insertion indicator.
'everybody' becomes 'all' (I've seen this before).
'tied' placed around 'all' is 'TALLIED'.
(Other definitions for tallied that I've seen before include "Corresponded - kept score" , "Reckoned debt or score" , "Matched" , "Agreed; calculated" , "Agreed, corresponded" .)