Dog in group has time for hesitation (6)
I believe the answer is:
setter
'dog' is the definition.
(setter is a type of dog)
'group has time for hesitation' is the wordplay.
'group' becomes 'set' (both can mean a collection).
'has' is a charade indicator (letters next to each other).
'time' becomes 't' (abbreviation).
'for' says to put letters next to each other.
'hesitation' becomes 'er' (sound used when hesitating).
'set'+'t'+'er'='SETTER'
'in' is the link.
(Other definitions for setter that I've seen before include "Crossword composer" , "Puzzle composer" , "Hunting dog" , "stream of cattle" , "Crossword maker; dog" .)