EB1b Support

Experts

I want to file EB1b since I got extension as a tenure assistant professor in a university. The University legal office will not do any thing for me during the summer (document and fee). If I file myself, what document is required from the office? Can I get from any document from the department or the Dean's office or provost's office as well. P.S. I have prepared all documents for NIW.

Thanks