7+ Taskbar Tweaker allows you to configure various aspects of the Windows taskbar. Beta version available.

Most of the configuration options it provides can’t be tweaked using the taskbar properties or the registry.

A tool that allows you to:

Reorder items within a tab group.
Group/ungroup/show label/hide label per Application ID.
Close/minimize/etc. multiple windows at once.
Change Application ID of windows (that is, grouping whatever windows you want).

You can open it from the Tweaker main window, from the tray menu, or optionally by double/middle clicking within the taskbar space.

Similar:
Enable or Disable Taskbar Transparency in Windows 10
How to Customize the Windows 10 Taskbar
How to Add Color to Your Start, Taskbar, Action Center, and Title Bars
How to Change the Taskbar Location in Windows
How to Center Your Taskbar Icons in Windows 10

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