Setting the policy means each of the named origins in a comma-separated list runs in its own process, and it isolates origins named by subdomains. For example, specifying https://example.com/ isolates https://foo.example.com/ as part of the https://example.com/ site.
Setting it to off or leaving it unset lets users change this setting.
Note: For Android, use the IsolateOriginsAndroid policy instead.
Example value: https://example.com/,https://othersite.org/
|Registry Hive||HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER|