Users
This page allows you to manage users in a number of ways, specifically you can:
Invite New Users
Invite new users by entering their e-mail addresses (individually, or in a list) and choosing their access permission-level from the drop-down menu. If you have an educational workspace, you'll see a link to add classroom accounts.
View User Visits
Check to see when a user last logged-in to your workspace (Hover your mouse pointer over a User's e-mail address and a small box will pop-up identifying their last log-in time, IP Address, and Location).
Modify User permissions
You can modify existing users' access permission-levels via the drop-down menus next to each user's e-mail address:
Remove Users
Remove users from your workspace by selecting "Remove access" from the drop-down menu and then clicking on the "Remove" button that appears.
Workspace Security
Home • Workspaces • Settings • Workspace Security
Note: Please be careful when making any workspace public. You should never post personal information on any page that is accessible to the public.
Setting a workspace so that only people invited can view it is the best way to keep your data private. If you set this setting so that "Anyone" can view, your content will inevitably be indexed by Google and various other search engines. As Administrator it is your responsibility to set this according to your site's needs.
Request Access
If this setting is checked, users who have not yet joined the workspace will be able to click a "Request Access" button on the login screen, which will allow them to send a quick message to the Administrator, requesting access. When this is done, all Administrators receive an email, and it is up to the Administrators to determine if the user will be granted or denied access.
Users List
By default, the Users tab of a particular workspace is available to all logged in users. To disable this, uncheck this option in the Workspace Security settings.
Reader Comments
By default on new workspaces, users with the reader permission level are not allowed to leave comments on workspace pages. You can uncheck the "Disable commenting for readers" checkbox to allow users with "Reader" permission on your workspace to make comments. Users with Writer, Editor, or Administrator privileges can always leave comments on any page they are allowed to edit.
IP Restrictions 
A premium feature. Using the IP Restrictions page in Settings, you can whitelist (ensure access to) or blacklist (deny access to) IPs or CIDRs.
You can find more information on using IP restriction here.
Notifications & RSS
This page will allow you to turn "on/off" e-mail notifications that are normally sent to users when your workspace's page content has been modified. It will also allow you turn "on/off" the ability for users to receive RSS feeds from your workspace. Your users can set more granular personalized notification settings in their PBworks Accounts. See more information about that here: Notifications.
