LayoutModification.xml

<?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">
  <LayoutOptions StartTileGroupCellWidth="6" /> 
  <DefaultLayoutOverride LayoutCustomizationRestrictionType="OnlySpecifiedGroups">
      <StartLayoutCollection>
          <defaultlayout:StartLayout GroupCellWidth="6" xmlns:defaultlayout="http://schemas.microsoft.com/Start/2014/FullDefaultLayout">
              <start:Group Name="Office 365" xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout">
                  <start:Tile Size="2x2" Column="0" Row="2" AppUserModelID="Microsoft.Office.Desktop_8wekyb3d8bbwe!Excel" />
                  <start:Tile Size="2x2" Column="2" Row="0" AppUserModelID="Microsoft.Office.Desktop_8wekyb3d8bbwe!Word" />
                  <start:Tile Size="2x2" Column="0" Row="0" AppUserModelID="Microsoft.Office.Desktop_8wekyb3d8bbwe!Outlook" />
              </start:Group>
          </defaultlayout:StartLayout>
      </StartLayoutCollection>
  </DefaultLayoutOverride>  
  <CustomTaskbarLayoutCollection PinListPlacement="Replace">
    <defaultlayout:TaskbarLayout>
      <taskbar:TaskbarPinList>
        <taskbar:DesktopApp DesktopApplicationLinkPath="%APPDATA%\Microsoft\Windows\Start Menu\Programs\System Tools\File Explorer.lnk" /> 
        <taskbar:DesktopApp DesktopApplicationLinkPath="%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\Google Chrome.lnk"/>
        <taskbar:DesktopApp DesktopApplicationLinkPath="%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\Microsoft Edge.lnk"/>
      </taskbar:TaskbarPinList>
    </defaultlayout:TaskbarLayout>
  </CustomTaskbarLayoutCollection>
</LayoutModificationTemplate>