DefaultLayouts.xml

<LayoutModificationTemplate Version="1" xmlns="http://schemas.microsoft.com/Start/2014/LayoutModification">
  <LayoutOptions StartTileGroupCellWidth="6" />
  <DefaultLayoutOverride>
    <StartLayoutCollection>
      <defaultlayout:StartLayout GroupCellWidth="6" xmlns:defaultlayout="http://schemas.microsoft.com/Start/2014/FullDefaultLayout">
        <start:Group Name="Web" xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout">
          <start:DesktopApplicationTile Size="2x2" Column="0" Row="0" DesktopApplicationID="%ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs\Accessories\Internet Explorer.lnk" />
          <start:DesktopApplicationTile Size="2x2" Column="2" Row="0" DesktopApplicationID="Chrome" />
        </start:Group>
        <start:Group Name="MS Office" xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout">
          <start:DesktopApplicationTile Size="2x2" Column="0" Row="2" DesktopApplicationID="Microsoft.Office.EXCEL.EXE.15" />
          <start:DesktopApplicationTile Size="2x2" Column="2" Row="2" DesktopApplicationID="Microsoft.Office.POWERPNT.EXE.15" />
          <start:DesktopApplicationTile Size="2x2" Column="4" Row="2" DesktopApplicationID="Microsoft.Office.lync.exe.15" />
          <start:DesktopApplicationTile Size="2x2" Column="0" Row="0" DesktopApplicationID="Microsoft.Office.OUTLOOK.EXE.15" />
          <start:DesktopApplicationTile Size="2x2" Column="2" Row="0" DesktopApplicationID="Microsoft.Office.WINWORD.EXE.15" />
          <start:DesktopApplicationTile Size="2x2" Column="4" Row="0" DesktopApplicationID="Microsoft.Office.GROOVE.EXE.15" />
        </start:Group>
      </defaultlayout:StartLayout>
    </StartLayoutCollection>
  </DefaultLayoutOverride>
</LayoutModificationTemplate>