Feature Request: Expand RegiStar Back-Tap Actions with Mute & Predefined Volume

Hi Samsung team,

​I really enjoy using RegiStar and the Back-Tap (Double Tap) feature on my Galaxy device. However, I noticed a significant gap in the available shortcuts.

​First, the highly useful option to instantly mute or toggle the sound mode (which is already perfectly available in the side key long-press settings) is completely missing from the Back-Tap (Double Tap) menu.

​Furthermore, it would be incredibly helpful to expand these actions. In addition to a direct "Mute / Unmute" toggle, adding an option to lower the media volume to a specific, predefined level (for example, 10%) would be a fantastic addition.

​Being able to trigger an instant mute or a gentle volume reduction with a quick double tap on the back of the phone would be the most seamless way to silence sudden loud media or voice notes without interrupting what is on the screen.

​Please consider adding these background actions to the Back-Tap options in the next update.

​Thank you!