This topic explains how you can create a plugin that customize the system dialog box Settings displayed when you click on the IDEA toolbar. This dialog box (see the screenshot below) allows you to specify both the project-specific and IDE-specific settings.
To customize this dialog, your plugin must contribute to the applicationConfigurable (IDE settings) or projectConfigurable (project settings) extenstion points available in the IDEA core.
This topic considers a sample plugin that customizes the IDE-specific settings. However, you can create your own plugin for customization of the project-scpecific settings using the similar technique.