By selecting the “Enable free registration” option, users will be able to register for a questionnaire freely, rather than only after receiving an invitation sent by the platform in the “Deliver a questionnaire” section.
This option is especially useful when it’s necessary to send an email that doesn’t necessarily originate from the platform. In this way, the questionnaire link can be directly included in the body of the email.
The same applies to registration for the Big5 legacy questionnaire.