Grandiose dances arranged (9)
I believe the answer is:
organised
'arranged' is the definition.
(organising is a kind of arranging)
'grandiose dances' is the wordplay.
'dances' indicates anagramming the letters.
'grandiose' is an anagram of 'ORGANISED'.
(Other definitions for organised that I've seen before include "Set up, mobilised" , "Efficient" , "Methodical" , "Arranged - structured" , "Put in order" .)