Participants and lecturers each have their own portal — no password, they sign in with a link from an e-mail.
The participant portal holds upcoming and completed courses, certificates and materials to download, adding a session to a calendar, editing the profile and consents, and requests to export or delete data. In their portal, the lecturer sees their sessions and the attendance sheet, marks attendance (which triggers the certificates), uploads materials, enters their unavailability and manages the signature used on certificates.