In Chrome and Chromium there is a way to set custom polices for an extension using a registry entry like the following HKEY_LOCAL_MACHINE\Software\Policies\Google\Chrome\3rdparty\extensions\<extensionID>\policy and you can view that it was loaded correctly by going to chrome://policy.
Is there a way to do this in ms-Edge Chromium? and if yes how can I see it in the interface that the policies are being loaded correctly.