Adding Pop-Up Blocker Exceptions(Allow Pop-Up List) via GPO

To get this setup follow these steps:
1. Open your preferred GPO editor and create a new GPO.
2. Navigate to Computer Configuration > Administrative Templates > Windows Components > Internet Explorer
3. Double click on the item named "Pop-Up Allow List"
4. Enable the GPO
5. Click "Show" to show a list of allowed sites
6. Click "Add" to add a new site to the list.
7. Accept all of your changes and apply the GPO. Remember when entering in allowed sites that only the domain name is allowed, so www.google.com will work, but not http://www.google.com. Wildcards are allowed as well, so *.google.com is also valid.