Staff on the road primarily sell drinks on behalf of church (5,5)
I believe the answer is:
sales force
'staff on the road' is the definition.
The answer and definition can be both groups as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'primarily sell drinks on behalf of church' is the wordplay.
'primarily' says to take the initial letters.
'drinks' becomes 'ales' (ale is a kind of drink).
'on behalf of' becomes 'for' (eg speaking on behalf of or for someone else).
'church' becomes 'CE' (abbreviation for Church of England).
The first letter of 'sell' is 's'.
's'+'ales'+'for'+'ce'='SALES FORCE'
Can you help me to learn more?
(Other definitions for sales force that I've seen before include "Company staff" , "Money-minded team" , "team taking orders" .)