From the menu in Cable Percussive, Window Sampling & Trialpit pages, you can go to the Labels page. This will display all of the active labels.
All of the 'white' labels are set to print whereas they greyed out ones are not. You can toggle a label on or off by clicking the green/red button above the label.
Clicking on the label will show a large version. Here you can print each individual label. This is also available by clicking the small label icon on the main log sheets!