Managed to be dashing? (3)
I believe the answer is:
ran
'managed' is the definition.
(both can mean organised or was in charge of)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ran that I've seen before include "at speed?" , "Managed; operated" , "Entered an election or managed" , "Was candidate" , "travelled fast" .)