Thanks Jason,
So, do I create a registration and login system in separate PHP files and include that as a plugin using the framework ? Do these pages need styling or will they inherit the styles from the page where they are called? I hadn't used Plugins before but happy to venture into it. As long as it serves my requirement.
Perhaps similar to calling the menu system in my webpages by just using the <require once> PHP code...
I will give this a try and get back to you if there are any issues.