If you are applying for a business visa and your child’s info is entered into the US or EU passport of one of the parents, you can get one invitation for the parent and the child together. Please provide your child’s data as well as the amendment page of the parent’s passport when you fill out the form. If your child has a separate passport, you will need to get a separate invitation for him/her as an accompanying family member. If one of the parent’s is a Russian citizen and the child is traveling to Russia with that parent, you will need to get a Russian passport or a tourist visa (private) for the child. Business visa invitation will not be appropriate.