Yes, there is a full tutorial on how to set up the Platform Manager. See the link shown below. The tutorial is titled, "Designing Platform Manager with PAC-Designer and ispLEVER.
http://www.latticesemi.com/view_document?document_id=25077
Another resource is the Quick Start Guide for the Development Kit, see link shown below.
http://www.latticesemi.com/view_document?document_id=38601