Activating an individual questionnaire only if there are eligible respondents from within a household roster

In this case, you could simply skip a group if a condition is met as shown in the image below:

In the survey tab of your xlsform:

In the choices tab of your xlsform:

Image 2

Data entry screen as seen in Enketo: when a condition is not met

Data entry screen as seen in Enketo: when a condition is met

Reference xlsform:

Selecting an Eligible Respondent.xlsx (11.3 KB)