Question about using CAS service

Good Afternoon, I hope everyone is doing well. I have two questions about how to navigate the CAS service that I was hoping someone could answer for me:

1: If my UG major is not in the dropdown menu for the "First Major" tab, am I forced to select the "Any Area not Listed" tab? Is there anywhere where I can fill in my major?

2: I was a transfer student, so I technically attended two undergraduate institutions. Is there a way to indicate this on CAS? I seem to be only able to select one undergraduate degree-granting institution. I am planning on sending both transcripts to CAS for GPA calculation, so I am concerned that they will not be able to indicate where part of my GPA came from.

Thank you.