Indeed, the consular fee to pay up to 6 years is not necessary. The package of documents is the same as for you-that is, a questionnaire, photographs, photocopies of the passport and birth certificates of all the pages, as well as a certificate of employment and a certificate from the bank to you, a photocopy of the first page of your passport and an open visa page, and a reservation tickets, hotel reservation, insurance policy. By itself, your visa is not the basis for opening a visa for your child. The basis is the planned trip. The exact list of documents you can see on the site of the visa center.