Computer Configuration > Administrative Templates > Google Chrome > Content settings
Both
HKLM\Software\Policies\Google\Chrome
Setting the policy lets you set a list of URL patterns that specify the sites that can open pop-ups. Leaving the policy unset means DefaultPopupsSetting applies for all sites, if it's set. If not, the user's personal setting applies. For detailed information on valid url patterns, please see https://cloud.google.com/docs/chrome-enterprise/policies/url-patterns. Wildcards, *, are allowed. Example value: https://www.example.com [*.]example.edu