In the kobotoolbox, if I select the name of the country, the name of the district will come. If I select the name of the district, the name of the upazila will come. How to do it

In the kobotoolbox, if I select the name of the country, the name of the district will come. If I select the name of the district, the name of the upazila will come. How to do it

for example: Enketo Express for KoBo Toolbox

@mdnurnabi, you could do it as outlined in our post discussed previously:

For details, you could also have a look at our support article Adding Cascading Select Questions.