How To Change Group Topic Visibility (non-BAA groups only)
If your Google Group is not part of the BAA suborg, you may change the visibility settings of your group to allow different types of users to see (or not see) the group's topic postings.
It is recommended that unless you have a specific need to share information outside of the group, that you keep the topics visible only to members of the group, which is the default setting.
In the upper-right corner
of the group management
screen, click the Settings
Then click on Permissions
and select Access
Select the desired