Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
This policy controls whether Microsoft Edge browser be allowed to use the browsing history to personalize the top sites in the customize sidebar page. If you enable this policy, Microsoft Edge will use the browsing history to personalize the top sites in the customize sidebar page. If you disable this policy, Microsoft Edge will not use the browsing history to personalize the top sites in the customize sidebar page. If you don't configure this policy, the default behavior is to use the browsing history to personalize the top sites in the customize sidebar page.