Dear Maintainer,

I'm a user of rygel (a dlna server) wanting to start this application at login.
I thought about using gnome-tweak-tool to do so. But the application did not
let me to add a component not yet listed. There is actually not a "add" button
or someting similar for adding it.

I think rygel is not a desktop application so that is not the appropriate way.
Does rygel comes with some kind of file that alllows you to manage it as a service with systemd?