Positioned prominently in group's sample (5)
I believe the answer is:
lying
'positioned' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives sometimes mean the same thing.
'prominently in group's sample' is the wordplay.
'sample' says the answer is hidden in the clue (I've seen 'sampled' mean this (I've seen this in other clues)).
'LYING' is hidden within 'prominently in group'.
Can you help me to learn more?
(Other definitions for lying that I've seen before include "Prone - untruthful" , "Invention" , "Deceitful" , "Flat" , "Telling fibs" .)