Hello student I'm sorry to inform you but there's no EWS Reservation in any of the NLU this is why there's no option for ews while filling the Clat Application form however there's domicile reservation and women reservation as well at the end of the application please fill it accordingly.

Application form for CLAT starts from 01st of January and shall remain open till 31st March 2020.

Feel free to comment if you have any doubt

Good luck