An appliance device to display a workspace with an aspect ratio assigned to the workspace, regardless of the aspect ratio of a local display. The appliance device displays only a portion of the workspace in a viewport window at one time. The appliance device also displays a preview version of the entire workspace. The preview version comprises a user-interface tool which enables panning of the workspace in the viewport window. A presenter device makes a presentation while interacting with a workspace while viewer devices watch the presentation. A viewer device displays the workspace with the assigned aspect ratio and displays only portion of the workspace at one time. When the presenter device interacts with a location of the workspace, the presenter device operates in conjunction with a messaging infrastructure and the viewer devices to automatically cause each of the viewer devices to display the location of interaction in the workspace.