How to evaluate a Category

How to evaluate a Category

by Nikolas izvolzev -
Number of replies: 0
Hi
i'm using Moodle 1.9, because i read that version permit evaluate a complete general category, buy still i don't known how do this

Pantallazo.png
I need to Complete Category "Nivel 1" get a letter grade, depending on every evaluation on every course.... how can i do it?

thanks and sorry for my English :p