You will get page :
In Epan some group's record already stored. You can see list below here. And you can create your own group too.
For create new group in account.
Balance Sheet : Please select balance sheet head name which is already defined in account application. It is mandatory to select.
Parent Group : Please select group name. It is not mandatory to select.
Group Name : Set group name.
After insertion of record here. i.e. :
After successfully addition of Account Group, Now you have to further move to 'Add New Ledger / Accounts' .