Workset Map Iview as Overivew for end user

Hi Experts,

Sap portal Version: 7.4

We have two standard roles (ESS, MSS) and two custom roles (Rol1 and Rol2), in our portal. Our requirement is, we need to create a workset Map ivew in HOME role, which should navigate to these 4 roles. Thus, the user will have two option to navigate to any role.

Either he can direclty select ESS role or he can open HOME role, there he will see all the top level navigation roles (ESS, MSS, rol1 and rol2) and then can select ESS role.

I know, I need to set "relative workset location" property in workset iview, but I am not getting the exact values.

Will appreciate any help.

Regards,

Khushboo