Associated with each Video Bookmark is a Layer. In the Layer Dialog and visibility panes these layers have the text ‘[b]’ added to the end of their name (to help distinguish other user-created layers, and layers created for video bookmarks). These Video Bookmark Layers are used to control visibility as one navigates through bookmarks. By default, all these layers are off but for the one that might be visible (because the video being played is at that bookmark frame).
In normal operation you can see the Surface Draw and pinned Point Clouds associated with the layer only when that video frame is visible. If you want to make a different set of these layers visible you can control their visibility on the Visibility panes. And in addition, the Video Bookmarks Pane has a check box that will make all Video Bookmark layers visible.