Position (..) according to if() condition

[Kal_Lam]

@Samuel1, here is a simple use case of the same that should help you understand on how the same can be used:

The first member of the roster should be the head of the household

You could do the same as outlined in the image below: In the survey tab of your xlsform: [Image 101] In the choices tab of your xlsform: [Image 102] Data entry screen as seen in Enketo: when a wrong entry is made [Image 103] Data entry screen as seen in Enketo: when a correct entry is made [Image 104] Reference xlsform: Head of the HH.xls (28.5 KB)

And this post too …

Restrict choices already selected from a repeat group

Welcome to the community, @miguel! Maybe you could try this out as outlined in the image below: In the survey tab of your xlsform: [Image 1] In the choices tab of your xlsform: [Image 2] Data entry screen as seen in Enketo: [Image 3] Reference xlsform: Restrict choices already selected from a repeat group.xlsx (11.2 KB)