The STEM Designated Degree Program list is a complete list of fields of study DHS considers to be science, technology, engineering or mathematics (STEM) fields of study for purposes of the 24-month STEM optional practical training extension described at 8 CFR 214.2(f). Under 8 CFR 214.2(f)(10)(ii)(C)(2), a STEM field of study is a field of study “included in the Department of Education’s Classification of Instructional Programs taxonomy within the two-digit series containing engineering, biological sciences, mathematics, and physical sciences, or a related field.
Appointments' procedures for all non-immigrant visas are the same. This is from my personal experience in Nov 2005.
Step 1.
Make the two payments - either by DD or cash at the designated branch of HDFC bank. Take copy of passport along. Get receipt of the payment. There'll be a barcode sticker on the receipt which will also have the number which will be your receipt no. for all future references. This can be done by the individual applying for the visa or any representative but should carry the Passport copy of the individual travelling.