You must have a PBS account to access Bento. Learn how to get a PBS account
Once you have a PBS account, you can log into Bento at https://bento.pbs.org/
If your account does not yet have access to a Bento site, you will reach a screen asking you to reach out to your Site Admin to request access. Every Bento site has a Site Admin or Admins at your station who manage users for the site. These Site Admins can add new users from their Site Settings page within the Bento console.
Once your PBS account has been granted access to a Bento site, you can update that site at any time by logging in at the Bento console link above.