How can I hide a specific group from the list of groups appear in space permissions page

Hi Team ,

We have an internal confluence group and want to hide that group from space permission page . Currently Space admin can add that group from space permission and we want to restrict it. As far as I understand from Atlassian documents this feature is not provided.

Is there a way , we can hide it using Custom HTML ? Anyone tried to implement it earlier , it will be helpful if you can share the solution for it.

Thanks & Regards