Looks like the screen shot u gave is from Overview screen. May be if you can give enntire portal screen shot it will help in understanding.
As its Java, u have to use Home Page Area Frame Work. There are lot of wikis on this.
And also you might have to configure subtype table and make sure no subtype
FAQ in ESS based on WD JAVA - ERP Human Capital Management - SCN Wiki
Customize the Homepage Framework with Custom HTML Content
Adding Link on ESS through backend ECC Configuration - Portal - SCN Wiki
Getting Started in ESS WD JAVA - ERP Human Capital Management - SCN Wiki