Hi, we are renewing our B1/B2 visa and have gotten an visa interview waived and have dropbox appointment in March. We will be submitting the documents (DS-160 confirmation copy, visa appointment letter, original passports, original 2x2 photos) through a representative (friend/coworker).
Do the visa applicants need to sign any documents physically? or does representative need to sign anything?
Also, are there any specific instructions we should give to the representative?