Well, I installed Navidrome on my up to date yunohost with CLI.
I have a few users on my Yuno, one is dedicated to admin all the apps (let’s call it “app-admin-user”).
The Navidrome tile poped for all users, and at first launch asked to create an admin for Navidrome.
I was able to create an admin for this app with one of my non-app-admin-user. That’s a problem, because I want to keep control of my server 
Is it possible to modify the installer in order to create the Navidrome admin at this moment ? IIRC, some apps do that (Nextcloud ?)
Not sure if I have to create an user ex nihilo or if I can use my existing “app-admin-user”.
I don’t either know what implies to declare the site as a public site during the installation.
Thank you in advance for your help 