A way to incorporate business course (5)
I believe the answer is:
ascot
'course' is the definition.
(Ascot is a racecourse)
'a way to incorporate business' is the wordplay.
'way' becomes 'st' (abbreviation for street).
'to incorporate' means one lot of letters goes inside another.
'business' becomes 'co' (short for company).
'st' placed around 'co' is 'scot'.
'a'+'scot'='ASCOT'
(Other definitions for ascot that I've seen before include "Tie or cravat" , "Berkshire town, famous for horse racing" , "Tosca (anag) - racecourse" , "where some of our betters may be" , "Where ladies wear new hats" .)