cost forecast in PS project summarization

Hello,

TASK

create a list about "project summarization"

Selection:  summarized hierarchy

hierarchy                                 cost forecast     actual     obligo

------------                                  -----------------     --------    ---------

1                                                 xxx                   xxx          xxxx

11                                              

111                       

Questions:

--------------

Question-1:     In which SAP-table I can find the "cost forecast" ?

Question-2      Is there a good "function module"  to select the data ( cost forecast, actual, obligo , ... etc) ?