In the account menu you can reach your personal account settings. As an instance owner you will furthermore find the possibility to manage the users that have access to your instance.
From the settings menu you will soon have access to all kinds of customization options for your instance.
YARPS is not only the app you are looking at right now. Step by step the YARPS ecosystem will grow and in this menu you will find the links to the different parts like the Community Hub where you can share your experiences and get in touch with other users as well as the YARPS team, the Idea Hub for your feature requests and the Content Hub where you will be able to find or sell new inspiring roleplaying content.