About GitHub App modifications
You can modify your GitHub App registration to change any of the settings that were selected when the app was initially registered. For more information about the settings you can select while registering a GitHub App, see Registering a GitHub App.
For example, you can change the name and description of your app, the permissions granted to your app, the webhooks your app subscribes to, or the visibility of your app.
You can also choose to test new optional features for your GitHub App. See Activating optional features for GitHub Apps.