customizing windows 10 taskbar and startmenu

Hello

I am working on windows 10 image where we have to customize start menu and taskbar. I created an xml which works great for start menu. But I tried to add taskbar it wont work.
Please find attached working start menu
I kept this xml in my c drive, and local policy is set to take this xml.
I tried adding some thing like below for taskbar
"<?xml version="1.0" encoding="utf-8"?>
<LayoutModificationTemplate
    xmlns="http://schemas.microsoft.com/Start/2014/LayoutModification"
    xmlns:defaultlayout="http://schemas.microsoft.com/Start/2014/FullDefaultLayout"
    xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout"
    xmlns:taskbar="http://schemas.microsoft.com/Start/2014/TaskbarLayout"
    Version="1">
  <CustomTaskbarLayoutCollection>
    <defaultlayout:TaskbarLayout>
      <taskbar:TaskbarPinList>
        <taskbar:UWA AppUserModelID="Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge" />
        <taskbar:DesktopApp DesktopApplicationLinkPath="%APPDATA%\Microsoft\Windows\Start Menu\Programs\System Tools\File Explorer.lnk" />
      </taskbar:TaskbarPinList>
    </defaultlayout:TaskbarLayout>
 </CustomTaskbarLayoutCollection>
</LayoutModificationTemplate>
startmenu.xml