Short of management (5)
I believe the answer is:
admin
This clue might be a double definition.
'short' is the first definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?
'management' is the second definition.
(I've seen this before)
'of' is the link.
Can you help me to learn more?
(Other definitions for admin that I've seen before include "those running the show" , "Paperwork (abbr)" , "that bureaucrat handles" , "Form-filling (abbr.)" , "Clerical work (abbr.)" .)