A Googler confirmed on the Android Feature Request page that separate volume sliders are coming for ring and notification volume.
Google will soon give Android users the ability to independently control ringtone and notification volume on their handsets. This could show up in the June Quarterly Platform Release (QPR) or Android 14, according to 9to5Google. The current setup, found by going to > , shows four sliders including Media volume, Call volume, Alarm volume, and Ring & notification volume.
9to5Google spotted an ADB command in QPR2 Beta 1 that created two separate sliders titled Ring volume and Notification volume. When Google adds this to Android, it will expand the number of sliders on the page from four to five and allow Android users to have notifications set at a lower volume than ringtones, a higher volume, or an equal volume.
