Asking moles in organisation to use coded message (5,6)
I believe the answer is:
smoke signal
'coded message' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs occasionally mean the same thing.
'asking moles in organisation' is the wordplay.
'asking moles' anagrams to 'SMOKE SIGNAL'.
Though, I'm unsure how this is indicated.
'to use' acts as a link.
Can you help me to learn more?
(Other definitions for smoke signal that I've seen before include "Message using fire" , "Fire-generated message" .)