Help Different Notification sounds for different email groups

[Android Questions]

I have an Android phone. In Gmail I have about 15 folders, some with filters to direct mail direct to the folder, some not. When some mail arrives for 2 of my folders (or has a label for one of them), I had setup in the past a different notification sound to the standard notification sound. It works well for these two. Now, I have no idea on how to do the same for any other folders/labels. I just can't seem to find any options/settings in Gmail on the phone or pc, or any options/settings for notifications to have different ones for different emails. Even tried having an email open to see if there were any choices then, couldn't find any.
I don't know if I set it up for an earlier Android version or not.(currently Android 5.0.2)

 

[AZgl1500]

I tried to do that last week, gave up.

One tone for everything on my Note 4.

I can set an Individual to a specific notification tone, but not a group....
I'm probably just dense.... as I don't use groups except for one....