MajorGeeks published a tutorial about how to disable access to Taskbar settings in Windows 10.
How to Disable Access to Taskbar Settings in Windows 10
Windows 10 offers numerous ways to customize your Taskbar. If you'd like to block access to most Taskbar settings, we can do so by editing the Registry or using our Registry files.
How to Disable Access to Taskbar Settings in Windows 10 - MajorGeeks