Prevent Master Detail Page to add a default toolbar item (in the latest version of Xamarin forms)

Hi,

We are developing a cross platform application for the following requirement:

On content page we have a button, On Button click another page should be open as overlay(Popup page ). For this we have tried the Master Detail page (MobileCRM) example provided , but mater detail page adding a default toolbar Item and on toolbar button click opening the detail page as Overlay(popup).

Is there any way to delete/Hide this default button and button title from toolbar. Or if any alternate way to open the overlay(popup) page. Popup page can contain the textbox, stack layout etc.

Thanks.