For the code below, assume that your Wiki's URL is http://mywiki.xwiki.com/.

All users registered on your Wiki are listed in http://mywiki.xwiki.com/xwiki/bin/view/XWiki/XWikiUsers.

To delete a user, click on the user's link to display the user. Then under the More Actions menu select Delete.

To add a user, click on the user's RegisterNewUser link, or go directly to http://mywiki.xwiki.com/xwiki/bin/view/XWiki/RegisterNewUser. On this page you can directly add a user. Note that when you add a user, the user is automatically added to the XWiki.XWikiAllGroup group.