Yes. At all PC workplaces there is LibreOffice installed. You can edit own texts, presentations or tables - also if they are created in MicrosoftOffice - via the Viewer. It is important to save the file in your editing format.
Please note: after ten minutes of inactivity the current user will be logged out, following a respective warning. At this point at the latest, all your personal data such as downloads, forms, histories and passwords are permanently deleted.