Open Safari
Click Safari in the menu bar
Select Settings
Click the Websites tab
Click Pop-up Windows
Find the website you want to allow
Set the website to Allow
If needed, choose Allow for other websites from the default setting menu
Close Settings
Open Safari
Click Safari in the menu bar
Select Settings
Click the Websites tab
Click Pop-up Windows
Find the website you want to allow
Set the website to Allow
If needed, choose Allow for other websites from the default setting menu
Close Settings