sorting sub groups in pivot tables
 

In my pivot table I am adding 4 fields to row labels, 1-ID 2-last name
3-first name 4- courses. The pivot table sorts by my first choice (ID, which
I need to be 1st choice because its the unique identifer) So one person
could have 4 courses and this is how it looks, but i also need the data in
courses to be sorted alpha.

2 Smith Joe Math
English
Science
4 Jones Mary Band

Any suggestions