Command sequence (5)
I believe the answer is:
order
I believe this clue is a double definition.
'command' is the first definition.
(I know that order is a type of command)
'sequence' is the second definition.
(I've seen this before)
(Other definitions for order that I've seen before include "Family - group - arrangement" , "association" , "the Speaker often calls for" , "Religious fraternity" , "Command; sequence" .)