Support for the small business owner (4)
I believe the answer is:
prop
'support' is the definition.
(prop is a kind of support)
'for the small business owner' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'the small business owner' becomes 'p' (I can't explain this - if you can you should give a lot more credence to this answer).
'pro'+'p'='PROP'
Can you help me to learn more?
(Other definitions for prop that I've seen before include "Moveable object used on stage" , "A rigid support - 37 Across is one" , "needed at certain stages" , "Shore for 4 down" , "Seize and hold firmly" .)