User Groups
As described in the Groups article, groups are a way of organizing access to content (categories and articles within them)
In order to use this Groups mechanism effectively, groups need to be defined (as described in the Groups article) and then assigned to each of your categories.
Users must then be granted access to certain Groups in order for them to access that content. This article describes how to assign users to groups.
The method is relatively simple, and can be done by any staff member with the CONTENT_EDITOR role (see User Roles for details).
Selecting a user from the User List shown in the knowledge base navigation menu you will see a list of which groups they are currently assigned to, for example:
There are only four groups listed in the example shown here, however your can define any number of groups as needed.
Note that any Groups that have their Public Access flag set (meaning they can be seen by anonymous or non-logged-in users) do not need to be explicitly enabled here, since all users would, by definition have access to that content. If you need to remove access to that content, edit the Group itself (and question why it was given the Public Access flag in the first place).
Assigning a user to specific groups is simply a matter of enabling the toggle associated with each group listed to the right of the page, then clicking save.
After assigning to a group or removing assignment, they do not need to log out and back in for these changes to take effect. The change will take place immediately. If they are currently viewing content from a page in a group that was revoked, then they can continue viewing it, but would not be able to access it again once they navigate away to another page.