Hi Mohammed, can you confirm that your form will be completed using a computer /laptop? If so the link shared by Kal Lam should work for you.
This structure doesn’t work in quite the same way on a phone or tablet, however if that is your method of data collection there are other ways of managing this challenge. Currently there is free assistance available to all data collection related to Covid19 so if you would like a short skype call sometime to explain your design priorities for the form we could help to implement any complex features.
