Verification of user without Census

Hi, What do I have to change in the verification.rb and / or application.rb file if I only want the following verification steps for a registered user:

We want to use Consul nation wide in Netherlands, so we want to replace the postal code with a general ‘member ID number’

Level 1 user : email verification
Level 2 user: SMS verification
Level 3 user : Member ID number

I do not want connection with Census or any other external database. Is this possible and if so, how can I do this?

Thanks beforehand!