Message tone to contacts on S7 edge

[Alita O]

I'm unable to set message tone to a contact on S7 edge. Advice is to edit click more and message tone. My phone only has ringtone and vibration. Anyone help .thanks

 

[Rukbat]

See No more separate notification tones in Oreo? (It's a long read - SMS Popup kind of gives it back to you.)