Allowing Only Specific Pop-Ups

  1. Open Google Chrome on your computer.
  2. Click the menu button (the button with three dots).
  3. Click the Settings button.
  4. Here on the Settings page, click on the Privacy and Security option listed in the left-side menu.
  5. In the Privacy and Security page, go to Site Settings
  6. In the Site Settings section scroll down to the Content section and click on Pop-ups and Redirects
  7. You may see a few pop-up exceptions already in the lists.  You can leave them there.  
  8. Click the add button for "Allowed to send pop-ups and use redirects".
  9. In the site textbox, type in the link for the website you'd like to allow.  Include http://.
  10. Close your browser then re-open it to make sure the settings are refreshed.