While on the site, go to > Settings > Websites > Pop-up Windows .
In the menu that appears, find and change the setting to Allow . For all websites (Global Setting): how do you unblock pop ups on mac
The "good feature" aspect of this process is (the ability to manage exceptions). While on the site, go to > Settings
Visit the site. Click Safari in the menu bar and choose "Settings for This Website". Settings for This Website pop-up will appear. Apple Support Community While on the site