Fuss around small guitar beginning to rile manager (13)
I believe the answer is:
administrator
'manager' is the definition.
(I've seen this before)
'fuss around small guitar beginning to rile' is the wordplay.
I cannot really understand how this works, but
'around' could be 'o' (a round letter) and 'o' is found in the answer.
'small' could be 'mini' (short for miniature) and 'mini' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for administrator that I've seen before include "I'll manage" , "Business organiser" , "One who manages an organisation" , "Executive" , "one controls" .)