Step 1: Run your bank app from your phone or PC.
Step 2: For phone, select PAYNOW then login. For PC, login first then select PAYNOW.
Step 3: Change "send via" or "type" to UEN (Unique Entity Number).
Step 4: Enter 199404012W for UEN
Step 5: Enter Amount and Remarks or reference so we know who is making the payment.
Step 6: Confirm.

Click here for step-by-step help.