You are reading the documentation for an older Pickit release. Documentation for the latest release (3.2) can be found here.
Pickit snapshots are a powerful tool for saving the results of a detection run. Please refer to the Saving a snapshot in Pickit article to learn more about them and how they can be captured.
Pressing the Snapshots button of the Pickit web interface top bar takes you to a page where you can browse, download and upload the snapshots of your Pickit system.