Each scheme can be copied by cloning each individual section:

Question set - download JSON and import into new scheme

Rating file - download file and upload into new scheme

Endorsements - Within the endorsements editor select “import from another scheme” on the right

Rules - Within the rule builder select “import rules another scheme” on the right

Documents - Copy the source and paste it into a new document under the new scheme

Reports - Clone the scheme and change which scheme it relates to within it report conditions 
 

  There is no “scheme clone” button, meaning you will need to create a new scheme by heading to “admin” -  “schemes” - “Create new scheme”