The 'groups' function allows managers to communicate and engage with their customers more effectively. Groups can be used when creating events, holding online chats and publishing news items.
If you publish a news item and click a specific group, only people who are part of that group can see the news or blog post.
A private group is one that managers control. Managers of the site need to approve users that want to be part of these groups.
A public group is more similar to an interest group. Customers and patients can choose to be part of whichever group they like.