Yes. The explanation should distinguish actual principals, eligible joining relatives and their stated charges. A total alone can obscure the programme structure.
Match financial records with named applicants
Preserve official instructions and actual payment evidence. A group spreadsheet should not be treated as proof that every individual has passed vetting or received approval.
A dated printout of the official page and FAQ, identity and civil documents for every included person, a complete source-of-funds file for the gift, a record of all prior U.S. travel and immigration history, and preliminary tax advice. Around both sit ordinary costs that no programme page lists — counsel to assess admissibility and classification eligibility, certified translations of civil documents, and the filing charges that attach to the immigrant classification actually used, which are published in the USCIS fee schedule. A notice naming only the principal says nothing about anyone else, and the family’s position is established by each person’s own documents: civil records proving the relationship, each child’s date of birth, and the material addressing admissibility. Where a relative’s recollection differs from the paperwork, resolve it against the documents before anything is signed, and keep each person’s notices, identity records and correspondence in a set of their own so one account cannot be copied over another.