KendomSmart Wifi Switch (Black, 1 Gang)

Works fine for 1 Gang 1 Way circuit, but how can I fit it for a 1 Gang 2 Way circuit (I.e - one light controlled by two switches)? Please help.

easy to set up and fix.can be fitted without neutral wire but the capacitor supplied is mandatory to be fitted.just a day over .hope it lasts..Updated :after few days of use could find that the 2 gang when the switches r alternatively switched on fast it gets into reset mode.and we have to add the device again.dont know if its a fault.

Worked very well even without the capacitor. Just connected 2 wires from the old switch. Works flawlessly with the google home and i will be buying more. Thankyou.