Member of trio indicated journey will be permitted (7)
I believe the answer is:
triplet
'member of trio' is the definition.
'triplet' can be an answer for 'trio' (synonyms). I'm unsure of the 'member of' bit.
'indicated journey will be permitted' is the wordplay.
I cannot really understand how this works, but
'journey' could be 'trip' (trip is a kind of journey) and 'trip' is found within the answer.
'permitted' could be 'let' (to let something happen is to permit it) and 'let' is found in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for triplet that I've seen before include "Handful of notes" , "One of three born at the same time" , "Group of three equal notes" , "One of three children" , "Baby with two similar siblings" .)