Visitor visa group appointment

[mailtojr_123]

I would like to set-up the interview for my mother and parents-in-law at the same time (same time for all 3 members at Chennai Consulate in one group). My father-in-law will be the first on the list. Please help me out the following queries:

1) While getting appointment thro online, How can I get the appointment for all three members at the same time ? How can I specify that it is a group appointment ? Is there any option ?

2) If I got the appointment, Will all three attend the interview at the same time ? or..Interview will be conducted for parent-in-laws separately and my mother separately, on the interview day?

Thanks