Enable the "Available by access code" option found in the project attributes screen.
Now you create a general link. Go to Anytime Evaluation >> Invite Participants and select the "General Link" tab.
- Check the E-mail, Name, Password fields accordingly. You usually only need the email address field which you can use as a unique ID to link between the external site and Comparion.
- Copy the generated "Invite link" to the clipboard. (show below)
If you log out of Comparion and paste that new link, you will be prompted to enter the fields you checked.