Budget roll up

Budget roll up

If we load budget details to main expenses and would like a view of budget vs actuals based on the roll up of sub expense, does anybody know how we can get it.  For e.g. our budget is loaded to main expense heads like Travel, Entertainment, etc.  Travel  has 3 sub GLs , similarly with Entertainment.  Budget vs actual is showing the entire amount as a variance in the Travel roll up and the other amount are shown below as variances.  Is there anyway, we can make it roll up?

e.g
                              budget                     actual                  Variance
Travel                   1,00,000                     -                        1,00,000
-Local Travel                                         30,000                  -30,000
-Intnl Travel                                          50,000                  -50,000

Would like the following view...

                            budget                     actual                  Variance
Travel                   1,00,000                 80,000                    20,000
-Local Travel                                         30,000                  
-Intnl Travel                                          50,000