Charge for client in TT

See TELLER.TRANSACTION - CHARGE.CODE.

Have you tried "playing" with CHG.TYPE ?

it's a field in TELLER.TRANSACTION and TELLER :

TELLER.TRANSACTION - CHG.TYPE
Field to configure which Account is to be defaulted as charge account either Account.1 or Account.2 in TELLER transaction
If set,this field will be defaulted in CHG.TYPE field in TELLER transaction
Validation Rules
It will be allowed for only customer to customer transfer i.e.CUST.AC.TRANSFER field set as YES
Can accept value as DEBIT PLUS CHARGES or CREDIT LESS CHARGES or Null.

TELLER -CHG.TYPE
Field to configure which Account is to be defaulted as charge account either Account.1 or Account.2
If ACCOUNT.1 is Multi-valued, system will default the first account(in ACCOUNT.1) in CHARGE.ACCOUNT field
This field will be defaulted from TELLER.TRANSACTION file
Validation Rules
It will be allowed for only customer to customer transfer i.e.CUST.AC.TRANSFER field set as YES in TELLER.TRANSACTION file
Can accept value as DEBIT PLUS CHARGES or CREDIT LESS CHARGES or Null.

Can be set without CUST.AC.TRANSFER = YES (at least in R11) - but don't know if it really works . . .

The only alternative will be attaching a routine.