How to create a members area

hi i am currently making a mmo in unity with a team of 3 and we have got the game running on the master server i was wondering how would you create a members area ? either using javascript or using C# i am also wondering would this be linked to the login aswell or would you have to set it up differently ?

any help would be much appreciated

A master server can not run a game, it only advertises games.
You can create your login system any way you want. You could use the WWW class to check info in a DB through PHP.

when i say the master server is running the game i mean that i can use it to run multiplayers over the internet. and that is my problem i am new to php and cannot really find any tutorials on creating a members area i have got a sign in page working locally and i can get it to work over a server using php and mysql but i am trying to add members area into my game so you can play it for free and then sign up to be a member to unlock other content that is otherwise locked away from you. for example runescape you can play for free or you can become a member to allow you to play the members only missions

Step 1: learn PHP