Support staff (5)
'support staff' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aides that I've seen before include "Adjutants" , "Right-hand men" , "Ministerial assistants" , "Military assistants to a senior officers" , "They help" .)
(Other definitions for cayenne that I've seen before include "South American capital" , "Pungent red pepper" , "Very hot, long peppers" , "Spice from chillies" , "Variety of pepper" .)