Setting Up the Cash Flow Report: Canada and United States 
To see categories in the cash flow report, you link them to profit and loss accounts and/or balance sheet accounts. You can link either to one of the predefined SAP Business One categories or to a new category that you have defined yourself.
Procedure
To add a category, proceed as follows:
From the SAP Business One Main Menu, choose
Financials 
Chart of Accounts 
.Click an account and choose Account Details.
In the Category field of the G/L Account Details window, choose Profit and Loss or Balance Sheet.
In the field to the right of Profit and Loss or Balance Sheet, choose Define New.
Enter a description of the category and choose Update.