How can one define an instance_name, when the question group is a roster?

[Kal_Lam]

Maybe you could do it (by using a variable that extracts the value form a roster) as outlined in the post discussed previously:

How to extract required information from a repeat group to a note question?

@Muhamad_Alqadour, maybe you could do it as outlined in the image shared below. But please note that the workaround is based on a maximum of 3 iteration. You will have to edit and update the iteration as required. In the survey tab of your xlsform: [Image 1] Data entry screen as seen in Enketo: [Image 2] Reference xlsform: Repeat Group.xlsx (11.0 KB)