Group of bewitching females (5)
I believe the answer is:
coven
'group of' is the definition.
'coven' can be an answer for 'group' (I have seen 'Group of witches' mean 'coven' so perhaps 'group' could also mean 'coven'). I am not sure about the 'of' bit.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for coven that I've seen before include "Group of witches" , "Gathering of witches" , "Witches' set" , "Charming women" , "Witch group" .)