Xamarin Forms Shell Tab Bar - Load default view for that Tab - xamarin.forms

I'm looking for a way to reset back to the default page for the tab when a user switches between tabs in a Xamarin Forms Shell based app.
Currently, my app has a number of tabs at the bottom, and a few of them can navigate to other pages (in a wizard type of scenario). Now, currently when a user clicks on a different tab and then returns to that tab - the last page the user navigated to in that tab is displayed - and I need the navigation to be reset to the default page for that tab.
Any pointers are greatly appreciated

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