The page is available when the Meteor plugin is enabled. The plugin is not bundled with PhpStorm, but it can be installed from the JetBrains plugin repository as described in Managing Plugins.
In this field, specify the location of the Meteor executable file (see Installing Meteor).
Automatically exclude ".meteor/local" directory on open project
When the checkbox is selected, PhpStorm automatically marks the .meteor/local folder, which is intended for storing the built application, as excluded but still shows it in the project tree. By default, excluded files are shown in the project tree. To hide the .meteor/local folder, click the button on the toolbar of the Project tool window and remove a tick next to the Show Excluded Files option.
Automatically import Meteor packages as an external library.
When the checkbox is selected, PhpStorm automatically imports the external packages from the meteor/packages file. As a result, PhpStorm provides full range coding assistance: resolves references to Meteor built-in functions, for example, check(true), and to functions from third-party packages, provides proper syntax and error highlighting, supports debugging with source maps, etc.
When this checkbox is cleared, PhpStorm does not automatically import the external packages from the meteor/packages file. As a result no coding assistance is provided. To improve the situation, open the meteor/packages file in the editor and click the Import packages as library link or run the meteor --update command.
Weak search for Spacebars templates
Select this checkbox to enable PhpStorm to search inside Spacebars templates. When this checkbox is selected and you invoke the Go to Declaration action on a helper, PhpStorm displays a list of all occurrences of this helper in templates. Choose the relevant one from the list.
When you invoke Got to Declaration with this checkbox cleared, PhpStorm does not perform any search and displays a tooltip which the following message: Cannot find declaration to go to.