The marrying process is a process of putting the printed foil sheet (A sheet) and marrying it to the adhesive sheet (B sheet) in the 2-step process transfer media paper.
This could be the Forever Laser-Dark or iColor transfer medias.
Make sure the following the instructions that come with your paper. If you have any additional questions please let us know.
Big shot our to our friends at Crio for another helpful video.