To add fees group, go to Fees Collection > Fees Group (fees group is collection of different types groups, here you can create fees like
Class 1 General - I Instalment, II Instalment fees, month-wise fees, admission fees, transport fees,
Class 2 General - exam fees, caution fees)
then enter Name and Description and then click on the Save button. You can view this added record in the Fees Group List on the right side of the page.
To edit the fee group click on the Edit icon and to delete the fee group click on the Delete icon present in the fees group list.