I do not know how to open the bottom panel of Gnome which shows the currently opened background applications and notifications and so on...
Usually I move my mouse to the bottom and sometimes the bottom panel shows up, sometimes not. I guess I am making something wrong.
Also I tried to find a shortcut for this (using the mouse, especially on a notebook is not the best solution) but I did not find a hotkey or some settings in dconf to do so.
I searched nearly half an hour via google but was not able to find an answer :/