Managing taskbar in Enterprices

Check this document Configure Windows 10 taskbar. It explains how to add links to the taskbar, as well as how to remove the initial icons.

I have done some here, it took me a while to figure out where things go wrong.

Be sure you add reference to the taskbar schema. It's not there if you edit add stuff to an Export-StartLayout output.

<LayoutModificationTemplate
 xmlns:defaultlayout="http://schemas.microsoft.com/Start/2014/FullDefaultLayout"
 xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout"
 xmlns="http://schemas.microsoft.com/Start/2014/LayoutModification"
 xmlns:taskbar="http://schemas.microsoft.com/Start/2014/TaskbarLayout"
 Version="1">
...

It took me quiet a while to figure this out, Notepad doesn't help here, Visual Studio's editor does :-)

Then be sure you at PinLintPlacement="Replace" as follows

...
  <CustomTaskbarLayoutCollection PinListPlacement="Replace">
    <defaultlayout:TaskbarLayout>
      <taskbar:TaskbarPinList>
      <taskbar:UWA AppUserModelID="Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge" />
      <taskbar:DesktopApp DesktopApplicationLinkPath="%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\OneNote 2016.lnk" />
      <taskbar:TaskbarPinList>
    <defaultlayout:TaskbarLayout>
  <CustomTaskbarLayoutCollection>
</LayoutModificationTemplate>

So far it seems only "programs" can be added. If you link references like a script or cmd, it's not resolved and/or added to start menu and/or tasklist.

.lnk files are resolved from %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs or individuals location of the Start Menu.

Also found out that locatized version can show different paths (localized), but the US-US path also works eventhough you don't see it in explorer.

Hope this helps.