I added a new user to my computer.
how can I move all my Fences from one user to anotherr
See this for backing up Snapshots and restoring them:
That said, Fences / Snapshots will not restore icons/files that do not actually already exist on the Desktop. For example, if you have many icons/files in the backed-up snapshot that do not exist on the new Desktop, Fences will create the Fences themselves but not the icons / files.
If the files do exist - and they are exactly the same name, then it should include them in the proper Fences.
Stardock Support Manager