Go to Settings → Settings Name → Touchless Interaction.

Touchless Interaction

Enable Wave: Select “Yes” to enable wave, else select “No”.
Enable Question and Answers: Select “Yes” to enable Question and Answers, else select “No”.

If selected “Yes”, you have to select the wave settings that has been created in the “Touchless Registration Settings”.

Enable Mask Enforcement (Prompt for Mask Undetected Response): Select “Yes” to enable “Mask Enforcement”, else select “No”.
Enable Voice: Select “Yes” to enable voice, else select “No”.

After selecting all the preferred sections, click on “Save”.