Crystal Reports Adding columns

Message

     When I select two months, my report gives me two rows of data for each person working. For an example, for August and September 2009, I get:

Name                Calls          Hours Worked            Expense
Joe Smith           1155                 140                        $1400
Joe Smith           1176                 145                        $1450

I want to add each row within each column together, rather than break them up. So, I am looking to make it a single row of data, like:

Name                 Calls          Hours Worked             Expense
Joe Smith            2331                  285                        $2850

Any recommendations? 