At the top of this tab is a checkbox labeled Enable desktop effects. If there is no mark in front of this checkbox, then all visual effects of this panel are disabled. To edit any of these effects, simply place a mark in this checkbox.

Below that checkbox there are some common settings for the desktop effects like improved window management, shadows, various animations, effects for desktop and window switching and the animation speed.

The main part of this page is a list of all available effects grouped by Accessibility, Appearance, Candy, Focus and Tools. Use the incremental search bar above the list window to find items in the list.

Check an effect in the list to enable it. Display the About dialog by clicking the info button at the right side of the list item. Some effects have settings options, in this case there is a tool button at the left of the info button. Click it to open a configuration dialog.

On this tab you can select a Compositing type (OpenGL or XRender) and set some options for the selected type.