Conditional appearance

Hi! I hope every is doing well!
I need your help!
In fact I plan a household survey! First I want to collect every single one of each sampled household inthe household questionnaire. Then, I want to ask questions for 2 of 18 years old member of each household for the individual questionnaire.
What I want is after the household questionnaire, those who are at least 18 years appear and I select sequently 2 of them to continue with the individual questionnaire.
Thanks in advance

Welcome to the community, @DINDANE! Maybe this post discussed previously should help you solve your issue:

HI Dear! It is OK! But I am back to you again! Rather than getting randomly I prefer to select by myself according to some informations. Is it possible that at the end of the household questionnaire it allow me to select some members by myself and continue with the individual questionnaire?