This quick tutorial is going to show you how to get the previous ‘2×2’, ‘3×3’ style rectangular grid workspaces in Ubuntu 18.04 LTS.

The default Ubuntu 18.04 Gnome shell lists all workspaces in a column, and navigates via Ctrl + Alt + Up/Down keyboard shortcuts. To arranges workspaces in a configurable grid, there’s an extension called Workspace Grid.

1. Install the extension by searching for and installing Workspace Grid in Ubuntu Software:

2. Then launch its settings either via the install page, or using Gnome Tweaks -> Extension.

There set the number of rows and columns of workspaces, other settings, and enjoy!