In QNE Optimum, please refer to https://www.youtube.com/watch?v=fywyAi-KrPo&list=PLCyuULJlHqwRveEiCVlYG5df4EnLy0fD-&index=25
In QNE Delphi, There is no auto way currently but subject for enhancement,
anyway, there is many way to handle that, below is one of the suggested way:
1. In the Bank Charges field from Pay Bill, Pls do not enter any amount
2. At the end of the month when u receive bank statement or access to internet banking once a week, please check the bank statement to see how much Bank charges you have, for example the total bank charges is RM5
3. Create another Payment voucher , select an account "Bank Charges", tax code is Tx6, amount is RM5
4. system will automatically calculate the GST for this Bank Charges.