Auto populate ID number field when I type in the name
I created a student database where I can keep track of the student who contact the program chair. The data entry layout auto-creates a student ID for each new entry. I have some other layouts for communications, action required, degrees, etc. What I'm trying to do is, when I create a new communication with that student, if I type just the name of the student, the student ID will be auto populated so that I don't have to look for it each time. How do I do that? I tried to create a relationship between the student name and the student ID in that same layout but it did not work.
Many thanks already,