WP-Members looks for a wp-members-pluggable.php file when it loads. This is where you can store your plugged versions of the WP-Members pluggable functions. To create the pluggable file, you need do nothing more than create a file named wp-members-pluggable.php and save it to your WordPress plugins folder.
But what if you would like to be able to edit this file within the WordPress admin panel using the plugin editor? This is a way for you to accomplish that.