The page is available only when the PHP plugin is enabled. The PHP plugin is not bundled with IntelliJ IDEA, but it can be installed on the Settings/Preferences | Plugins page, tab Marketplace, as described in Installing plugins from JetBrains repository.
On this page, specify the scripts requests to which you want IntelliJ IDEA to ignore during debugging. This approach can be useful, when your application contains scripts that use AJAX. Suppose you have a menu-ajax-script.php that "reloads" a part of your web page. This script works properly so you do not need to debug it. However, this script is still requested during the debugging session. To have incoming connections to this script ignored, add the menu-ajax-script.php script to the skipped paths list.
Notify about skipped paths
Select this checkbox to have IntelliJ IDEA inform you every time it receives a request to a script to be skipped.
This list shows the scripts and folders to ignore requests to.
Click this button to have a new line added to the list. Then click Browse and in the dialog that opens choose the file or folder to skip connections to.
Click this button to have the selected item removed from the list.