In Gnome Desktop Environment you can see a menubar at top-leftmost
place. whenever you want to open some new task/application, you launch
from menu bar.
Here is a trick which can give you fast access to menu bar. Step 1 : remove menu bar by right click at menu bar see pics
step2 : just press "Alt + F1" , your floating menu bar is with you :)
if you want add menu bar then you can add using "right click to panel
and all menu bar"
by narendra sisodiya