Proof of Accommodation:
Hotel confirmation for the entire period of stay in Schengen area and a letter from the tour organiser along with the naming list and passport number of all applicants and mentioning that they are doing hotel, ticket, insurance for all the passengers.
Hotel should match the ticket dates and maximum stay should be Switzerland. Students above 16 years of age: Copy of Student College ID Card Children travelling alone or not with both parents (under 18 years of age): authorisation letter signed by both parents and as a proof of the signatures a copy of their passports or PAN cards or driving licenses of both parents. Any additional documents as requested by the embassy at the time of presentation.