Renaming Folders, Assets, Collections or Recordings in Motion Explorer is very similar to renaming objects in Windows Explorer. You can either right-click on the item and select "Rename" from the pop-up menu or select the desired item and use the "Rename" ribbon icon from the top of the screen. This icon looks like this in both locations .
See the attached video for examples.
How do I rename RDI Data Files in the Motion Amplification® software?