Great, how can be set to let user to switch to mobile phone or tablet menu

great, how can be set to let user to switch to mobile phone or tablet menu if he is on pc?

I don’t understand what you mean by that.

Right now, depending on device with which user accessing application, we have menu for PC, Tablet - with icons, and menu for mobile phone. If user accessing application with PC can we set some action button for example, and when user click on it to switch to menu like he has on tablet? I didnt found any method for something like that.
I am not sure if I explained right…