Pincode field, Residential area field should be asked after the village is selected from the location page. This is to reduce user burden of entering the same details again and again for all HH and beneficiaries. Both of these fields should be mapped to all HHs and all beneficiaries in the village, autopopulate pincode fields wherever needed.
 
If some beneficiaries are coming in the camp from other villages then when Village name is changed from the dropdown while registration the already autopopulated field of Pincode should reset and can be taken from the beneficiary at the time.