Powershell newbie - need help with structure

Question

I would like to use Powershell to copy some files from C:\Users to another location

I need the script to copy files for any number of users which may exist under C:\Users. It will be run on different machines which may have different users on each.

I need the complete folder structure kept intact & copy the files in C:\Users*\AppData\Roaming\"Specific application folder" to another location.

I've tried various combinations of Copy-Item but cannot figure out how to move just the folders I want while keeping the folder structure.