The Web Deacon
WWW sites for religious communities
Community, Activity, Ministry...
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Put up a page for each sub-group of your organization.
Each sub-group in your organization or church can have a page or an article list describing its structure and activities. All share the roster, calendar, etc.

Examples may include bible study, prayer groups, circles, women's activities, youth, membership, etc.

Your governing body or bodies may wish to have their own sections.

It's even possible to spin off companion sites for major groups within the organization. They can share a domain, roster, calendar, etc., while reporting on their specific assignments and accomplishments.

Groups are a feature of Premium and Enterprise sites.