At the Vietnam war memorial on the national mall in DC, the names are listed by date of death, but there are phone-book style guides that list the names alphabetically with the wall ___location.

Presumably this will offer something similar.

In fact, I wouldn't be surprised if it was just touch screens showing the names.911memorial.org page. What more do you need?

I'd bet there will be kiosks on site to find names, and there already is a website to find names that will point you to the panel: http://names.911memorial.org/

No, not impossible, just difficult. Because there are so many people being memorialized. I believe this is intentional.