MRV Fee payment for H1B with a family from Singapore

We are planning to attend the h1b interview as a family of 3 persons. I’ve submitted multiple DS-160 forms and created an account in and have added family details. Before going into the payment option, the form shows I’ve to pay a Total Fee (3 x 190 x 1.40) i.e SGD 798.00.

But when I go to the payment options and click on the deposit slip, it shows a popup with SGD 266(i.e. 190 USD) and not the total amount.(I’m assuming I need to create three deposit slips based on the amount). And in the instructions, it says,“If you are applying for multiple visas for your family or group, only ONE payment is required.”, which is contradicting my assumption.

Can you please help me on how to do the payments. Thank you