Professional salespeople brought up to do well (7)
I believe the answer is:
prosper
'do well' is the definition.
(I've seen this in another clue)
'professional salespeople brought up' is the wordplay.
'professional' becomes 'pro' (abbreviation).
'salespeople' becomes 'reps' (I've seen this in another clue).
'brought up' says the letters should be written backwards (in a down clue, letters go up).
'reps' back-to-front is 'sper'.
'pro'+'sper'='PROSPER'
'to' is the link.
(Other definitions for prosper that I've seen before include "Thrive, boom" , "Get rich" , "like Merimee, nominally" , "Go well" , "Make good" .)