Cannot find "Voice Alias" field i for gesture command n APPLICATION EVENTS

(Hololens2 and Vuforia Studio 9,4.0.5555): I follow example "Blue Pump" according standard description as https://support.ptc.com/help/vuforia/studio/en/#page/Studio_Help_Center%2FBeginnerEyewear.html%23 

I did it many times before, on Hololens under Stydio 8 , 2018. Now try to repeat it on the new configuration as an approval of functionality (Voice control and voice gesture  support from HoloLens) but I cannot find voice control fields ("Voice Alias", "Voice Response", "Voice Help"...) in the APPLICATION EVENTS section for any of gesture event, for example, "doubletap" (as described in  13.step of https://support.ptc.com/help/vuforia/studio/en/#page/Studio_Help_Center%2FBeginnerEyewear.html%23   

Question: why I cannot see "Voice Alias" field in my Vuforia Studio 9,4.0.5555?