It is not routinely recommended by Indian academy of pediatrics for all children. It is advised only for high risk children who have other problems like heart disease etc and also if the disease is common in your area. So you have the option whether to take it or not after discussing with your Pediatrician

It is not included in IAP,NIS routine chart

Not necessary. It can be given if financial aspect is not a major constraint as this vaccine is costliest of aal others.

Meningococcal vaccine prevent Meningococcal meningitis. All vaccine prevent occurrence and complications of particular illness for which they r made. Meningococcal meningitis cases are sporadically seen in india in various parts and largely missed due to rapid progression of illness or lack of investigation facility. The illness is more prevalent abroad. If in case u r one of regular international travelers for holidays or otherwise u should go for it without second thoughts.