Some gogs customization... Please help

Hi. I’m not really familiar with web development, but I need to use a git-like service for my project. I have a few questions, I need help:

  1. Perhaps the most important question is how to make an empty repository immediately created during registration (Without questions(!); let’s say with the name “default”)?
  2. How do I remove everything from the registration page except the registration field?
  3. How do I make it optional to register an email and set an empty password?
    Help pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease.
    Waiting for any help…