If you refer to a group of people as a charmed circle, you mean that they seem to have special power or influence, and do not allow anyone else to join their group.
[literary]
...the immense role played by this very small charmed circle of critics. [+ of]
charmed circle in British English
(tʃɑːmd ˈsɜːkəl)
noun
literary
an influential and exclusive group
An immense role was played by this very small charmed circle of critics.
They seemed part of a charmed circle.
Examples of 'charmed circle' in a sentence
charmed circle
She might even find herself trusted enough to be invited into the charmed circle around Todd.
Clive Barker COLDHEART CANYON (2001)
I sat and watched and listened to that charmed circle and I swear there was no seduction on earth that would have persuaded me to leave it.