If you want to get an overview of the contact's training data, this can be done through the "Statistics" tab.

Select the contact by pressing Statistics → Select Contact → Select desired contact and press ok.

Here you get an overview of the number of completed training sessions for the selected period, number of exercises, trends, date of the last performed session, logged smileys and when the contact was last logged in.

If you only want to see statistics for the contact - click on the contact's name. By clicking on where sessions have been performed or exercises performed on the selected contact, you can see the statistics for the selected contact. Read the article on how to display a statistical overview per contact here.