well the forms are always on short supply.As against the normal 6-named ticket, you can atmost group urself into a member of 4.
secondly, railways provide these forms to a particular institute(generally) to avail concession for students travelling in their semester holidays only....(as told by u already)..and the procedure is same...
third, this concession is NOT VALID for E-tickets.
fourth- if...
more... traveeling in group, all the members must hav same originating &destination stations with same train ,same day!!
Good Wishes!!
prashant(I m a frequent user of this concession)