http://help.sap.com/erp_mss_addon10/helpdata/en/a4/c9b104b9d54556903173d9508cd5c5/content.htm
Hi,
This comes from the OADP settings from back end SPRO or refer table V_TWPC_ORGVWGRP which in turn is linked to V_TWPC_ORGVW
In standard, the group used for ECM planning is MSS_ECM_SEL and for ECM Approval is MSS_ECM_SEL_REV
This is the path --> SPRO --> Integration with other SAP Components --> Business Packages / Functional Packages --> Manager Self Services (mySAP ERP) --> Object and Data Provider --> Organizational Structure views.
Infact all the three nodes here are very relevant to build the fields, fetch the data and arrange the view.
You may refer to the link for more information on the set up.