Not allowed to walk away from, having implemented (7,3)
I believe the answer is:
carried out
'implemented' is the definition.
('carry out' can be a synonym of 'implement')
'not allowed to walk away from' is the wordplay.
'not allowed' becomes 'out' (I've seen this before).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'walk away from' becomes 'carried' (I can't justify this - if you can you should believe this answer much more).
'out' put after 'carried' is 'CARRIED OUT'.
'having' acts as a link.
Can you help me to learn more?
(Other definitions for carried out that I've seen before include "Taken from the building" , "Accomplished - what boxers hate to be!" , "executed" .)