This quick tutorial shows you how to enable ‘Minimize on click’, the feather that minimize the running application window when you clicking on the icon in left launcher.
While Settings and Gnome Tweaks utilities do not provide an option to toggle the action, you can enable the feature with Dconf Editor.
1. Search for and install dconf editor in Ubuntu Software:
2. Then launch the tool and navigate to org -> gnome -> shell -> extensions -> dash-to-dock. Scroll download, and click go to settings for click-action.
3. Finally disable default setting and choose “minimize” as its value from drop-down menu:
Minimize running window on click via single command:
For those who prefer Linux command, open terminal (Ctrl+Alt+T) and run single command to do the job:
gsettings set org.gnome.shell.extensions.dash-to-dock click-action 'minimize'