How do I keep KivyMD bottom app toolbar on multiple screens - kivy

Question

I am trying to keep the KivyMD toolbar on multiple screens, I have searched on stackoverflow before, and found out I may need to create a class and inherit it. Question: Is this right, if yes I would be very grateful is you could make a sample of the class, and if no I would equally be grateful for your opinion.. Thanks.
Here's my .py file
from kivymd.app import MDApp
from kivy.uix.screenmanager import Screen, ScreenManager, NoTransition
from kivy.core.window import Window
Window.size = (300, 500)
class Screen1(Screen):
pass
class Screen2(Screen):
pass
class TwoScreenApp(MDApp):
def build(self):
self.theme_cls.primary_palette = 'Gray'
self.sm = ScreenManager(transition=NoTransition())
self.sm.add_widget(Screen1(name='screen1'))
self.sm.add_widget(Screen2(name='screen2'))
return self.sm
def change_screen(self, screen):
self.sm.current = screen
"""I am using this self.sm method to link
icon to screen2 until I find a better way"""
TwoScreenApp().run()
and Here's my .kv file
ScreenManager:
Screen1:
Screen2:
<Screen1>
name: 'screen1'
MDBoxLayout:
md_bg_color: (240/255, 240/255, 240/255, 1)
orientation: 'vertical'
MDLabel:
halign: 'center'
text:
"""With the production of the Model T automobile,
Henry Ford had an unforeseen and tremendous
impact on American life. He became regarded
as an apt symbol of the transition from an
agricultural to an industrial America."""
MDBottomAppBar:
MDToolbar:
icon: "account-circle"
type: "bottom"
left_action_items: [["arrow-right", lambda x: app.change_screen("screen2")], ["alpha-x-circle", lambda x: x]]
right_action_items: [["alpha-y-circle", lambda x: x], ["arrow-left", lambda x: app.change_screen("screen1")]]
elevation: 10
<Screen2>
name: 'screen2'
md_bg_color: (240/255, 240/255, 240/255, 1)
MDBoxLayout:
md_bg_color: (255/255, 255/255, 255/255, 1)
orientation: 'vertical'
MDLabel:
halign: 'center'
text:
"""The development of mass-production techniques, which
enabled the company eventually to turn out a Model T
every 24 seconds; the frequent reductions in the price
of the car made possible by economies of scale; and
the payment of a living wage that raised workers
above subsistence and made them potential customers
for, among other things, automobiles—these innovations
changed the very structure of society."""
MDBottomAppBar:
MDToolbar:
title: "Title"
icon: "account-circle"
type: "bottom"
left_action_items: [["menu", lambda x: app.change_screen("screen1")]]