This Is What You Must Do BEFORE Setting up Meeting to Submit College Board/ACT Accommodation Request 

You can also watch this How To short Video 
(If the student has a IEP, the request is submitted by the case manager)
Understand, even if you have accommodations through a 504 or IEP, a student must get approved accommodations for College Board and/or ACT Exams.  

First, read and understand the process on the College Board Submitting a Request webpage. 
Since this is an outside agency, it is the family’s responsibility to read, understand and gather all required documentation.

Minimum requirement for all accommodation requests through Sequoia:
Consent Form (English)  or Consent Form (Spanish)
Copy of 504 (or other formal plan)
Teacher Survey on Classroom Behavior (at least one) Email the teacher this form directly

Again, depending upon disability and accommodation requests, other outside reports are sometimes required (refer to College Board documentation webpage)

After you understand the process, have gathered all the documentation you want to submit, complete the following forms (cut and pasted from the actual submission site)        
What is the documented disability?        
What accommodations are you requesting?
In one email, if possible, submit all required documents (every situation is different) along with some possible times we can meet to submit your College Board Accommodation Request to Ms. Ignaitis

This process needs to be started well before the College Board deadline.
Parent Brochure from College Board

ACT Accommodation Requests
For ACT, you need the same type of documents (can use the same Teacher Surveys)
The process is a little different in that you need to register for the exam FIRST and request accommodations. 
You will be told to contact Ms. Ignaitis to set up a meeting AFTER you gather and send me all of your documents ACT Website for Requesting Accommodations - read and understand