Computer Configuration > Administrative Templates > Microsoft Edge > Permit or deny screen capture
Both
HKLM\Software\Policies\Microsoft\Edge
Setting the policy lets you set a list of URL patterns that can use Tab Capture. Leaving the policy unset means that sites will not be considered for an override at this scope of capture. This policy is not considered if a site matches a URL pattern in the 'SameOriginTabCaptureAllowedByOrigins' (Allow Same Origin Tab capture by these origins) policy. If a site matches a URL pattern in this policy, the following policies will not be considered: 'WindowCaptureAllowedByOrigins' (Allow Window and Tab capture by these origins), 'ScreenCaptureAllowedByOrigins' (Allow Desktop, Window, and Tab capture by these origins), 'ScreenCaptureAllowed' (Allow or deny screen capture). For detailed information on valid url patterns, please see https://go.microsoft.com/fwlink/?linkid=2095322. This policy only matches based on origin, so any path in the URL pattern is ignored. Example value: https://www.example.com [*.]example.edu