If you're new to CornerTable, check out there Tech group, if you have some basic questions on how CornerTable works.
But, think FB with subtle setting differences.
For example, posts.
The default setting for a new profile is "Everyone/Public" so anything you post will be seen by everyone.
To counter this, change the settings to "Friends Only" and from thereon, all posts will be private.
Same with the newsfeed. It's automatically set to public so any posts (groups, profiles) set to public will show up, but you can change the newsfeed to ONLY groups, your friends and pages YOU follow.
Check out the Tech Support group for more tips from those who have been using CornerTable since just about the beginning of CornerTable.
https://cornertable.us/techsupport