I am developing an app which has a feature involving the "Do Not Disturb" setting in the device.
My question is, is it sufficient to allow this feature only on API >=23 based OS (6.0 and above), or should it be supported on older OS versions? Which OS version was this setting introduced?
Yes, the "Do not disturb" mode is only available on API >= 23. So yes, it is sufficient to allow that feature only on 23+.