It shows the way to create a right rumpus (5)
I believe the answer is:
arrow
'it shows the way' is the definition.
(I've seen this in another clue)
'create a right rumpus' is the wordplay.
'create' says to put letters next to each other.
'a right' becomes 'ar' (I've seen this in other clues).
'rumpus' becomes 'row' (I've seen this in another clue).
'ar' next to 'row' is 'ARROW'.
'to' acts as a link.
(Other definitions for arrow that I've seen before include "Pointed weapon" , "It may indicate" , "Pointer; bolt" , "Missile, bolt" , "what may have killed Harold?" .)