Generally, pop-ups are used for advertising, but some sites may use them to show information without disrupting the currently open page.
Whenever Internet Explorer blocks a pop-up window, a message like this one will appear.
In this menu, you can choose to allow pop-ups for this website or open the pop-up blocker options.
Let's see how to add a website manually.
1) Open the menu.
2) Click Internet Options.
3) Go to the Privacy tab.
4) If you want to allow all pop-up windows, deselect this box.
5) Click Settings.
6) Type the address of the web site for which you want to allow pop-ups and click Add.
7) Click Close.
That's it! Now you know how to manage your pop-up blocker in Internet Explorer.