first extract zip file than..
1st step
than open otp_project\otp_project\codeogniter_proj\application\config\config.php
change the base url from line no 26 if you put this another folder inside htdocs $config['base_url'] = 'http://localhost/otp_project/otp_project/codeogniter_proj/';
#NOTE - I am using xampp here
2nd step
update sql in database named - user_info (1).sql I have provided inside document_upload folder
3rd step
open your localhost and go inside otp_project/otp_project/codeogniter_proj/
than you get those 2 button of admin for login
4th step
admin
click on the link "register for admin" put your mobile number and click on 'sent otp' youll get the otp to the provided number #Note I have only 8 credit left for getting otp from free api
if you dont get otp on mobile than open your console you'll file your otp their
after that you'll redirected to the user screen and you'll find all the users their
and the button for 'add user' for adding the user
user
this is also same as admin but if admin creates a user than only we can login here through that number and on that number you'll get the otp and here is also same as admin if credit not left than you can open console to find that otp
their you can find add document and list of document