Logout if idle __ minutes — When you login (as Teacher or Admin, not TA), set how many minutes it should wait before logging you out automatically. Note the time limit is minutes since you last switched screens, not minutes since you logged in, so it's normal to set it low, like 5 or 10 minutes.
Or select "Never" from the menu to never logout if idle. That option is convenient for your home computer, but for security do not select that on any computer where students might have access. This option is reset if you change your password.
Your system admin may set a maximum time limit, e.g., to prevent you from selecting more than 15 minutes. See the screen in Admin Mode.
Note it does save changes before logging out automatically.
Troubleshooting: If you keep getting logged out before the time limit, try deleting your cache.
Forgot Password/Username — Click this button on the login screen if you forget your password or username. It prompts you to enter your username or email. If the username is valid, or the email address matches your account, it sends you your username and a link to reset your password. (For security, your password is never emailed to you.) Once you login you can always change your password or username on the screen.
Security Alerts — If someone logs into your account from a computer or browser you've never used before, the system automatically sends you a security alert. (If your computer always deletes cookies, it will send a false alert every time you login, so you may turn off this option on the screen.)
Note: Concurrent logins are allowed, so you can log into your account from multiple computers or multiple browser windows at the same time. But for TA's, it's better to use the TA Login, and for team-teaching it's better for each co-teacher to have their own account.
Note: It makes no difference whether you login at jupitergrades.com or jupitersis.com. Both websites access your same account.