Shaun & Seoyeon

I believe each file cannot exceed 2MB. So, if you can submit everything under 2MB in one PDF do that. If you have to break it up into multiple parts- do that. I think our proof of domicile was maybe 7 separate files. Labeled Proof of Domicile Part One/Part Two etc. There was also a separate "Intent to Re-establish Domicile" letter which itemized/ mentioned each upload (so 8 files total). 

Correct ,but think of the joint sponsor package as one package.  One copy of the tax return transcript is fine, but you need to show evidence of each income, each citizenship status and residence evidence.  For example one utility bill with both names covers both people but you need two separate evidences of citizenship or LPR status.