@Liz @CapucineDL
i think you could make this work if you asked a yes/no question about adding coworkers - along with a proviso that you’ll get them to that page in a bit, as soon as they finish all the rest of the required info about the primary respondent.
When you are finished all the questions for the primary, you come back with a question/statement page that says “ok, time to add your coworker details” and when they hit the ‘let’s add them’ button - which submits the form for the primary, it redirects them to a second typeform for the coworker information (hidden fields to carry the unique id ie email to the next form) .
in this second form you get them to enter the details for the coworker and end it with a ‘add another yes/no’ that submits and exits or submits and redirects back to the second form again, carrying the hidden field of the unique identifier..
des