Wrong Forum to post this in. But the explanation thread is here. https://forum.novelupdates.com/threads/how-does-novel-updates-work.21477/ It's pretty easy to figure out even without reading the thread. You just click "User Profile" from the drop-down menu next to your name up on the top right corner of NU and there's an "Add Series" option, among many others. Anyone can add a series as long as it follows NU's rules, or else it won't get accepted.