In case you want your trainees to have an extra source of information with them (e.g. a manual with procedures), you can add a PDF document to your scenario. This document can be viewed at any time by the trainee while they're playing the scenario. The document can be accessed by a button which is always present at the bottom of the screen.
How to add a PDF document?
Click on the 3-dot menu and select 'Add document (PDF)'. Upload the right PDF file and add a document title.