The "Inspector" field should be their 2-character initials. If another inspector has already used their initials, either use their 3-character initials or put 1 (or 2, etc.) after their 2-digit initials.
The "Inspector Name" field is their first and last name.
Fill out title, phone number, and email.
Enter their GT account (e.g., gburdell7) as the "User ID Link".