I created new Google Play game and would like to change the email displayed on Google Consent Screen. Google Developers Console screen has a dropdown to choose email, but just one - admin's email - is here. I've added another user as the owner, but it is not appeared on the consent screen.
You need a second email address then add that person / email as admin of the project. Then you will be able to add that email in the consent screen.
The Console has changed a lot since 2014, You need to add another user as the admin then you must login to console with that email and connect it. Then you will be able to change it.
A new user can be added via the Iam for your project.