I want to create a questionnaire in Qualtrics containing a number of blocks (1 block for each of the domains). The participant should be able to choose the order in which he answers the different blocks (domains) or maybe answer only 2 of x domains. When he is finished with the questions for that domain he should get the possibility to answer the questions for one of the other domains. Or if he doesn't want to answer anymore domains, end the survey.
How can I do this best in Qualtrics?

Thanks in advance and best regards,

Marc.