Your questions are covered in the Application Help, see the attached links. Just in case I attach also a link to a document here on SCN describing the procedure. You should learn how to search for documents here on SCN and on help.sap.com.
http://help.sap.com/saphelp_nw70/helpdata/en/42/c8204dd57f136fe10000000a1553f7/frameset.htm
http://help.sap.com/saphelp_nw73ehp1/helpdata/en/e9/546e60777641509a5e0dc5cd05675b/frameset.htm