I am following the following steps in Group Management End to End tutorial. Is something missing after step 5 as the Portal expects you to enter user/group name in the text box before clikcing 'OK' button. To enable access to the ILM Portal Log on to the ILM"2" Web portal as Administrator. To open the Site Settings page, click Site Settings from the Site Actions menu on the right upper corner. To open the Permissions page, click Advanced Permissions under Users and Permissions . To open the Add Users form, click the New menu item. In the Add Users section, click the Add all authenticated users link. In the Give Permissions section, select Design - Can view, add, update, delete, approve, and customize. Contribute - Can view, add, update, and delete.

use "NT AUTHORITY\Authenticated Users"