Install: sudo apt-get install openbox
Configure:
cp /etc/xdg/openbox/rc.xml, /etc/xdg/openbox/autostart.sh to ~/.config/openbox/
edit ~/.config/openbox/autostart.sh
VirtualBox &(sleep 5 && xterm -e screen) &google-chrome &
Use xprop WM_CLASS to check the name and class of applications that you want to custom their behaviors after executing. Then edit ~/.config/openbox/rc.xml in applications part
Useful commands:
Alt + Tab:switch windows
Win + (F1 - F4): switch to desktop 1 - 4
Ctrl + Alt (<- ->): switch desktops sequentially
Alt + F4: close window
Reference: