Local parameter override

Modify locally one of the shared parameters

Sharing entire layers or simply a "modify group" will cause the purple "Share" icon to appear on a large number of lines in the stack or properties panel.

This allows you to synchronize hundreds of settings in just a few seconds, but you may want to locally regain control over only one of them.

To do this, simply click on the connection button again to bring up the Quad Menu and choose "Unshare".