Hi Aleksandra 🙂
It is not possible to send window to pending list, only widgets can be sent there. Also, it is not possible to set window1 for desktop view, window2 for tablet view and window3 for mobile.
You can howewer set different widgets and content for each view (desktop, tablet, mobile) in one window. To do so:
- Switch off Live View
- Open window configuration and go to tablet view
- Switch off "Auto" composition
Now you are able to modify content for a window shown on a tablet view. Then the same with mobile.