Volume Panel Android 7.1.1
Yes this is found under Settings → Sound i.e



If for some reason you can't find it or is hidden, then just grab a third-party activity launcher application from playstore e.g Quick shortcut to access com.android.settings/com.android.settings.Settings$NotificationSettingsActivity


Install Quickshortcutmaker from Playstore
Select normal search - under input box type sound and click search


  


In search results it will show Settings click it,  and expand the list you will find "Sound &amp; Notification"  then click try (or create shortcut by pressing create).