The Activate command enables you to recall an existing Visual Bookmark any time, so that all the parameters it contains are restored and you bring the document back to the status at the time the Visual Bookmark was created.

You can perform the command from the context menu displayed when right-clicking the selected Visual Bookmark or simply double-clicking the selected Visual Bookmark.

You can view the Visual Bookmarks from the Visual Bookmarks tab on the left pane of your model/drawing document.

Take a look at the video list  e-Learning on Visual Bookmarks