Extension talk:WhiteList/Installation

I set "$wgWhitelistOverride['always']['read']" variable on LocalSettings.php but it is not working ex: $wgWhitelistOverride['always']['read']=array("Main Page");

Hi, great extension, but it does not work for me. I think my problem is the section Configure Users:

 Before the extension can be used, a sysop has to add the desired users to the manager group.
 Note, by default, a sysop will not have the necessary permissions to see the manager's 
 Special:WhiteListEdit page. So, it might be a good idea to add your sysops to the manager group also.

Can you please give an example, what exactly is to do I have no idea.

 Next, assign whomever you want to restrict to the restricted group. 
 Now, your managers can create and modify the restricted users' whitelists using Special:WhitelistEdit.

Please one more words.

Thanks.