I would like to change a setting for my Android (v5.1.1) to make my YouTube app show notifications (on the Lock Screen and Status Bar as it currently does), but without vibration and sound. That is, I want to override the default notification volume/vibrate settings.
Looking at other Android StackExchange questions such as this one, it appears that this might be a feature I would need to rely on the developers of the app to implement. Assuming this is not the case, is there is any setting that would allow app notifications while disabling the volume/vibrate only for that app?