As a teacher, when I want to view my students' activity in a Moodle course, I may be interested in viewing the activity of ONE or ALL of my STUDENTS. I am NOT interested in viewing my own activity as a TEACHER, of which there is a lot, which floods the reports of my students' activity.
WISH LIST: on the drop-down choice list, to the individual names of students and ALL PARTICIPANTS please add a "ALL STUDENTS" choice line!
Even better, make drop-down list items clickable, so I can select any names of students I want to track...
If you're interested in my suggestion, please vote for my feature request #2633
Joseph