Well, I think I found the next thing to go into my tutorial.
Tl;dr:
On the main site, you can't. That is given to you by the system based on your reader count.
On the forum, you can edit it in your profile after a certain amount of posts.
Edit:
I added a new section to it with "About Titles"
This tutorial is constantly maintained by yours truly and encompasses the basics for readers and writers. Check Section-C for finding more writing tutorials and a helping hand in developing your story by other ScribbleHub users! To navigate more easily ctrl+f the titles in the table of contents...
forum.scribblehub.com