With the new Radeon Crimson Drivers, the former icon which gave us the option of setting presets more easily is gone.
But there is a way to get the icon back to more easily change presets without having to open Additional Settings app.
The icon is a shortcut of CCC.exe - which should be located in "C:\Program Files (x86)\AMD\CNext\CCCSlim\CCC.exe" if you are using Windows 64-bit
Just right-click on the file CCC.exe, choose to pin to the Task Bar.
Now that the icon is there, you can right-click on the icon, and you will see the list of the presets that you have created, thus you can more easily change presets at will.
I hope that helps.