It sounds like you want to create a query-based security group, like the query-based distribution groups you can create for exchange. Unfortunately that capability is only available for distribution lists, not security groups. Query-based groups take more CPU and RAM on the Exchange server as well.
You CAN create a static security group and grant ownership and management of it to one person in the group so they can maintain the list themselves.
Thank you, Technochic.
This is what I am sort of looking for. Yes, I know about the query based distribution. But the problem I was asked is “If a group of people are invited to a meeting/calendar, then only those people can see the details and edit”. I know of the static acl, but wasn’t sure whether I can apply something like query based acl and how? You have answered my question, Thank you.