Start developing it in a tie (8)
I believe the answer is:
initiate
'start' is the definition.
('initiate' can be a synonym of 'start')
'developing it in a tie' is the wordplay.
'developing' is an anagram indicator.
'it'+'in'+'a'+'tie'='itinatie'
'itinatie' with letters rearranged gives 'INITIATE'.
(Other definitions for initiate that I've seen before include "Originate" , "Start (something)" , "Admit with rites into a society" , "Cause to begin, launch" , "Launch or induct" .)