Is there a way to change the subdomain for an app?

Hello, I am creating a CAD/MDT for GTA 5 FiveM RP communities and I don’t know how to change the subdomain of a project.

I mean the default subdomain as in

Is there a way to do this?

No, currently there isn’t. You can duplicate your application with a different application name though. Another option is adding your own custom domain, that will override any domain from showing up on your application.