1. Choose Presentation next to Upload in the room toolbar.
  2. Pick a PowerPoint (PPT or PPTX), Keynote, OpenDocument presentation, or PDF file.
  3. Wait for it to appear on the presentation screen.
  4. Use the arrows on the sides of the screen to change slides.

Everyone sees the same slide. The owner or admins can lock the screen so only they change slides.

Files can be up to 20 MB. If your presentation is larger, compress its images or export a smaller PDF before uploading. The person who uploaded the presentation can use its Download PDF option. If a complex presentation does not look right, try exporting it to PDF and uploading that version.