Yes the simple way is to make a GL Accounts for which Account group that does not have any GL Account ( subgroup ), but since we would to use a reporter that can show Accounts group's total in a page, thats why i asked about it
we have some account group in our chart of accounts like this :
60 Liabilities
60 101 Current Liabilities
60 101 002 Accounts Payable
71 210 Bank Charges
in first row 60 is ( class ) 101 ( group ) 002 ( gl account) and in fourth row 71 (class) 210 (group) and it does not need to any gl account coz it has not too much record
so as you see bank charges does not have any GL account so now its not possible to entry any record to that until make one GL account to that , so i just wondered if there is any way to fix this