Create Main Menu

import pymel.core as pm

mainWindow = pm.language.melGlobals['gMainWindow']
menuObject = 'myMainMenu'
menuLabel = 'Vorasorn Toolkit 2020'

if pm.menu(menuObject,label=menuLabel,parent=mainWindow,exists=True):
    pm.deleteUI(menuObject)
   
   
customToolsMenu = pm.menu(menuObject,label=menuLabel,parent=mainWindow,tearOff=True)

pm.menuItem(label='Save As..',subMenu=False,parent=customToolsMenu,tearOff=True)
pm.menuItem(divider=True)


pm.menuItem(label='Modeling',subMenu=True,parent=customToolsMenu,tearOff=True)
pm.menuItem(label='MoveObject To Origin',command='MoveObjectToOrigin()')
pm.setParent('..', menu=True)

pm.menuItem(label='Rigging',subMenu=True,parent=customToolsMenu,tearOff=True)
pm.menuItem(label='AutoRig Human',command='MoveObjectToOrigin()')
pm.setParent('..', menu=True)

pm.menuItem(label='Animation',subMenu=True,parent=customToolsMenu,tearOff=True)
pm.menuItem(label='Delete Flat keys',command='MoveObjectToOrigin()')
pm.setParent('..', menu=True)

pm.menuItem(divider=True)
pm.menuItem(label='About Me',subMenu=True,parent=customToolsMenu,tearOff=True)
pm.menuItem(label='My Python Reference',command='MoveObjectToOrigin()')
pm.menuItem(label='My Mel Reference',command='MoveObjectToOrigin()')