Like I said and Pat repeated, use a subreport. It can be based on a totals query like:
SELECT Bank_Statement_Monthly_ReportQ.Description, Sum(Bank_Statement_Monthly_ReportQ.DebitAmount) AS SumOfDebitAmount, Sum(Bank_Statement_Monthly_ReportQ.CreditAmount) AS SumOfCreditAmount
FROM Bank_Statement_Monthly_ReportQ
GROUP BY Bank_Statement_Monthly_ReportQ.Description;
and put in the report footer. You can add a page break if desired.