US Immigration from Ghana

Hi everyone please I m about to submit my birth certificate on CEAC. My dad who is the petitioner has a change of name and has a affidavit from USCIS to support that. Currently the I bear the surname on the change of name documents
Should I attach my dad change of name to my birth certificate and upload on CEAC( as in 2 pages . Page 1 will be birth certificate and page 2 will be charge of name) or I should upload the change of name as other documents.Thanks

Can I pay my fees with a debit card online? I didn t see it as and option.

My son arrived in the country almost a month ago with an immigrant visa and am a us citizen. My son has been enrolled in one of the Elemantary schools in my city. My question is can I apply a US passport for him with his immigrant visa since I don t know when the actual green card will be in the mail ?

Please I m about to start with my ds260 form. Please after filling and submitting the form, does the uploading of civil documents automatically opens for you or I will have to wait for NVC to approve my ds260 before the civil d documents section opens?

Please how will you know that different applicants were filed separately? I mean if everyone has her case number does it mean our petitions were filed separately? And we want get interviews dates together?