I am trying to add a menu item in the Tools menu (using IDM_VS_MENU_TOOLS) which is having two child menu buttons. But not able to do it. But if I add the same with IDG_VS_MM_TOOLSADDINS as a top-level menu then I am able to see it inside Extensions menu which is fine (Follow img-1). 
As per the image, I want to add My Top Menu (with its sub commands) into Tools menu. How can I do that? I tried following code but nothing changes but My Top Menu also removed.
<?xml version="1.0" encoding="utf-8"?>
<CommandTable xmlns="http://schemas.microsoft.com/VisualStudio/2005-10-18/CommandTable" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <Extern href="stdidcmd.h"/>
  <Extern href="vsshlids.h"/>
  <Commands package="guidMultipleMenuCmdTestPackage">
    <Groups>
      <Group guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroupTop" priority="0x0600">
      </Group>
    </Groups>
    <Menus>
      <Menu guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroup" type="Menu" priority="0x0600">
        <Parent guid="guidSHLMainMenu" id="IDM_VS_MENU_TOOLS"/>
        <Strings>
          <ButtonText>My Top Menu</ButtonText>
        </Strings>
      </Menu>
    </Menus>
    <Buttons>
      <Button guid="guidMultipleMenuCmdTestPackageCmdSet" id="Command1Id" type="Button">
        <Strings>
          <ButtonText>Changed 2</ButtonText>
        </Strings>
      </Button>
      <Button guid="guidMultipleMenuCmdTestPackageCmdSet" id="Command2Id" type="Button">
        <Strings>
          <ButtonText>Command 2</ButtonText>
        </Strings>
      </Button>
    </Buttons>
    <Bitmaps>
      <Bitmap guid="guidImages" href="Resources\Ext1.png" usedList="bmpPic1, bmpPic2, bmpPicSearch, bmpPicX, bmpPicArrows, bmpPicStrikethrough"/>
    </Bitmaps>
  </Commands>
  <CommandPlacements>
    <CommandPlacement guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroupTop" priority="0x0601">
      <Parent guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroup"/>
    </CommandPlacement>
    <CommandPlacement guid="guidMultipleMenuCmdTestPackageCmdSet" id="Command1Id" priority="0x0601" >
      <Parent guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroupTop"/>
    </CommandPlacement>
    <CommandPlacement guid="guidMultipleMenuCmdTestPackageCmdSet" id="Command2Id" priority="0x0602" >
      <Parent guid="guidMultipleMenuCmdTestPackageCmdSet" id="MyMenuGroupTop"/>
    </CommandPlacement>
  </CommandPlacements>
  <Symbols>
    <GuidSymbol name="guidMultipleMenuCmdTestPackage" value="{5f20b1ae-835b-423f-89e1-a33f2e20a715}" />
    <GuidSymbol name="guidMultipleMenuCmdTestPackageCmdSet" value="{2e60374a-c4f8-4d96-9bb6-301ab412846f}">
      <IDSymbol name="MyMenuGroup" value="0x1020" />
      <IDSymbol name="MyMenuGroupTop" value="0x1021" />
      <IDSymbol name="Command1Id" value="0x0101" />
      <IDSymbol name="Command2Id" value="0x0102" />
    </GuidSymbol>
    <GuidSymbol name="guidImages" value="{512d3770-bde4-4353-a6c0-7138bbfffebe}" >
      <IDSymbol name="bmpPic1" value="1" />
      <IDSymbol name="bmpPic2" value="2" />
      <IDSymbol name="bmpPicSearch" value="3" />
      <IDSymbol name="bmpPicX" value="4" />
      <IDSymbol name="bmpPicArrows" value="5" />
      <IDSymbol name="bmpPicStrikethrough" value="6" />
    </GuidSymbol>
  </Symbols>
</CommandTable>
More Information (Edited):-
When I replace <Parent guid="guidSHLMainMenu" id="IDM_VS_MENU_TOOLS"/> from Menu tag to Group tag and then run, I can see the sub commands only under Tools menu. (Please reffer to img-2)

