Select the file in Bridge and choose Edit > Copy.
Right-click the file in Bridge, choose Copy To, and choose a project or folder from the context menu (to specify a folder not listed, choose Folder, select a desktop or project folder, and click OK).
Ctrl-drag (Windows) or Option-drag (Mac OS) the files to a different location.
Drag the files from one project to another (if you drag the files to a different location in the same project, they are moved).
Drag a file to a different location in the same project (if you drag the files from one project to another, they are copied).