How does Win7 hide the icon at the bottom right of the computer

Yesterday, the computer system was reinstalled under win7 system. The default lower right corner of this system can't automatically hide the icon. When I opened some software and QQ Want Want, there are many icons in the lower right corner, which takes up a lot of space in my address bar. So I figured out how to hide the icon. Here is my solution:
Phenomenon:

No hidden icons
Operation:
Mouse to the taskbar - -- Right click, Properties --- Show taskbar and Start menu properties --- Select Custom —— Remove all checked icons and notifications on the taskbar in the option bar at the bottom of the pop-up window. after the option


remove the tick, click OK after the lower right corner of the computer icon is hidden. The effect is shown in