Minimize On Click

Tweak – Enable Minimize On Click Feature In Ubuntu 14.04

Minimize On Click, the long awaited feature is now available in Ubuntu 14.04 Trusty Tahr and it is disabled by default. You can enable it from Compiz Settings Manager, but first you need to install CompizConfig Settings Manager. When Minimize On Click is enabled, rather than an open application minimizing when its launcher icon is clicked, Unity focuses the window. In scenarios where you have more than one window opened, it triggers the App Spread allowing you to choose from which running window or app desired.