User blog comment:Lucy554/Aikatsu Stars: Project Maho No (Magical)/@comment-14948008-20170416172352/@comment-29740360-20170418000743

If you follow the link to the forum, there should be an info bar on the side, which lists different categories (sub-forums) in which you can post. When you join and click 'post' after you write the post, and submit it, it'll ask you what category you want to put in, and you can select from there! Hope this helped!