I have already created kobo forms, however, now I am facing difficulty in entering family members roster based on mentioned family size. I already looked at the form and found solutions using XML form. But I want to edit the existing form, rather than creating a whole new XML form for entire questionnaire. So please suggest me a solution.
Welcome to the community, @sri1! You should be able to do this by using the repeat count
function as outlined in this support article Grouping Questions and Repeating Groups.