Yan,
Select your project in the Package Explorer and from the MyEclipse menu (or the MyEclipse context menu on right clicking the project), you can select “Add xxx Capabilities…” to make that MyEclipse feature available to your project.
Most capabilites can only be added to Eclipse java projects.
Please have a look at our quickstart guides for more detailed info. Help > Contents > MyEclipse Application Developer Guide > Getting Started.
Best,
Brian.