Darted around as one did business (6)
I believe the answer is:
traded
'one did business' is the definition.
(I've seen this before)
'darted around' is the wordplay.
'around' indicates anagramming the letters.
'darted' anagrammed gives 'TRADED'.
'as' acts as a 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" .)