Darted around as one did business (6)
I believe the answer is:
traded
'one did business' is the definition.
(I've seen this in another clue)
'darted around' is the wordplay.
'around' indicates anagramming the letters.
'darted' with letters rearranged gives 'TRADED'.
'as' is the link.
(Other definitions for traded that I've seen before include "Darted (anag.)" , "Did business, bought and sold" , "Engaged in commerce" , "Bought and sold for profit" , "Exchanged, bartered" .)