That being said, we can’t deny that the taskbar in Windows 10 is the best iteration yet. Not only can you customize it in several ways, but you can also tweak it for improved productivity.
But if you really want to be a taskbar pro in Windows 10, there are five shortcuts that you’ll need to know by heart. Over the long run, these may save you a lot of time and inconvenience.
1.    Shift + Click on a taskbar app to open another instance of that app. This may not work with some apps that force one single window, but for the most part, this can be used to launch a second or third copy of Chrome or Skype, for example.
2.    Shift + Ctrl + Click on a taskbar app to open an instance of that app as Administrator. Some apps can only perform certains actions as Administrator — Sublime Text comes to mind as one example — and this is an easy way to do that.
3.    Shift + Right-Click on a taskbar app to show the window menu for that app instead of the normal taskbar menu.
4.    Shift + Right-Click on a grouped taskbar app to show the window menu for that app group rather than the normal app group menu.
5.    Ctrl + Click on a grouped taskbar app to cycle through all open window instances in that app group.
You can boost your productivity even further by making use of the Task View and Virtual Desktop features. Also, consider customizing the Start Menu in a way that best suits you.