It is quite easy to disable or/and enable button (program, app) grouping in Windows-7 or Windows-8!
Click the right mouse button on an empty area in the Task Bar open the Taskbar Properties
via click on "Properties" [... see Image 1 Arrow-1] !
In the Taskbar Properties / Taskbar buttons: select the option "Never combine" [... see Image 1 Arrow-2] .
In the Taskbar Properties you can also:
1. Lock the taskbar
2. Auto-hide the taskbar
3. Use small icons or large icons
4. Switch the Taskbar location on screen: Bottom, Left, Right or Top
5. Totray: Customize which icons and notifications appear in the notification area.
6. Disable or enable use the Aero Peek to preview the desktop
FAQ 63: Updated on: September 25th 2018 00:43