How to add or where to put credentials when I fill out evaluator’s information?

[nldeitz105]

On CASPA, when you want to create an evaluation request by entering the first and last name, email address, due date, and personal message to your evaluator. If my college professor is going to be one of my evaluators, where should I add his Ph.D credentials? And also what is the personal message to evaluator used for? 

[Cadapter]

They will add their own credentials when they register for their account on the evaluation portal.