Yes,you can use Delete/Move-Rename/Move to Chest
This way you'll also see how avast! works on virus detections.
You can play around with EICAR whatever you like.
You'll learn how avast! handles files with specific commands and what kind of messages you might encounter. Its like a safe learning method
Delete command will delete the eicar,Move will move it to .\avast!\moved and Move to Chest will move it to quarantine (which can be accessed from Simple Interface).