Hi ddl23, when we applied for visit visa last Nov. 2009 I did a separate online appointment for my 2 sons.
https://www.vfs.firm.in/pl-apptsyste...ppwelcome.aspx
"Important: If you are part of a family or group, each member of the family or group must make an individual appointment. For example, if you are a family of 4 with 2 adults and 2 children (under 5 year-of-age) you must make 4 individual appointments."