After you create and register a GitHub App, you can make modifications to the app, change permissions, transfer ownership, and delete the app.
Installing GitHub Apps→
When your app is public, anyone can install your app on their repository through an installation URL. When your app is private, you can only install the app on repositories that you own.
Modifying a GitHub App→
After creating a GitHub App, you can make changes to it.
Editing a GitHub App's permissions→
After registering a GitHub App, you can modify your app's permissions.
Making a GitHub App public or private→
When setting up a GitHub App, you can make its installation public so any GitHub user or organization can install the app, or private so you can only install it on the account that created it.
Transferring ownership of a GitHub App→
You can transfer ownership of a GitHub App to another user or organization.
GitHub App を削除する。→
You can delete GitHub Apps when you no longer use them.