You just need to link to this page in order to make use of it. If you create a link to the logout page any user that is logged in that clicks on the link will be logged out. If the user is not logged in then they will be sent to the login page.
If you want a user logout page for the admin area you can use the same page as you are for the users but you will need to modify some of the things at the top. Currently lines 1-6 look like this in the logout page:
<?php require_once( "WA_SecurityAssist/Helper_PHP.php" ); ?>
<?php
if (!WA_Auth_RulePasses("Logged in to users")){
WA_Auth_RestrictAccess("users_LogIn.php");
}
?>
If you made a copy of this page and put it in the admin area you would need to change these lines to be like this instead:
<?php require_once( "../WA_SecurityAssist/Helper_PHP.php" ); ?>
<?php
if (!WA_Auth_RulePasses("Administrator")){
WA_Auth_RestrictAccess("users_LogIn.php");
}
?>
You would also need to make a link to this page in your admin area.