I am a British citizen and my fiance is Iranian.
We have filled the application form for him and his son to come to the UK, I can financially sponsor them which is what he has stated in his application. (This is on gov.uk website) but on his son’s form there is nothing about my sponsorship but questions were about my fiance’s job and his income.
What we have available is:
My fiancé:
1)Passport
2) Birth certificates
3) divorce papers
4) custody document for his son with rights of living abroad
5) proof of relationship ( photos together, skype calls, plane tickets)
6) lifeskill A1 certificate
7) letter from his employer with his salary and contract details
Myself:
1) Passport
2) 6 month payslip
3) letter from my employer with my salary, duration of contract and employment with its type
4) 6 month bank statement
5) council tax for my property
6) copy of land registry
7) my divorce papers (decree absolute) from my first marriage

9) cover letter for my sponsorship
10) letter from council registration office for venue and date pf our wedding
When I looked at the different places there was conversation about filling in a form which is VAF4A appendix 2. Is this required and for his dependent‘s application what should be submitted? Am I missing something important?
Thanks in advance for your support