You can set up another voice color for the voicebank.
Tools > Singers
Edit subbanks
1. Add a new voice color and give it any name you like
2. Select all tones
3. Type in the suffix
4. Set the suffix to the selected tones
5. Save settings
In the piano roll, select the CLR expression to edit voice color. You'll see all of the custom voice colors that you added to the voicebank, and you can pick which one to use on each phoneme.
