This quick tutorial is for those who want to remove the top and left panel, instead use Microsoft Windows style a single bottom panel in Ubuntu 18.04 Gnome desktop.
Without installing other desktop environments, e.g., Cinnamon and KDE, this can be done easily via Gnome shell extensions called dash to panel.
Dash to panel combines the top panel and left dock launcher into one single panel. So your Ubuntu deskop will look like:
1. To install the extension, search for and install Dash to Panel extension
in Ubuntu Software utility:
Once installed, restart your machine to apply changes.
2. To configure the panel appearance, either use Gnome Tweaks or right-click on application menu and select “Dash to Panel Settings”.
That’s it. Enjoy!