Changing Project Thumbnails
Step 1: Select a project by clicking on it in the project explorer or create a new project.
Step 2: Upload data into it.
Step 3: Refresh the project dashboard and you will see that the summary panel is now displaying the first frame of the video that was uploaded.
Step 4: Once you start making annotations, you will see more frames will appear below the project thumbnail, you can select a new project thumbnail by clicking on one of the thumbnails.