Permanent STS On Pa50

[nivinraphael]

Hi, I have a Pa50 SD

Can Anyone Help me to set a permanent Single Touch Setting (4 Voice).
Example - If i change a style the sts should remain same

STS 1. Violin
2. Strings
3. Flute
4. Vox Pad

Can anyone Help me PLEASE AND IF YOU THINK THIS IS NOT POSSIBLE IN PA50 SD DO REPLY ME