It is very simple to add both images and videos to your presentations.
First, click on the widget of your choice in the "Add Content" tile.
Then, the widget block will appear in the center of the screen. Click on it to add the file of your choice. You can add a file either saved in your Prezentor File Archive, or upload it directly from your device.
If you want to update existing images or videos in a presentation, watch this video: