Copying Custom Fields from one Entity to another.

Hey Guys,

I have a load of Custom Fields under Organization for our custom Change Request process we built. I now need to make some amendments to this process and need to move these Custom Fields to User Group Entity. Because there are quite a few, is there anyway of copying these into User Group? The only difference is where the fields sit within Clarizen's data structure.

I thought there might be an API call to do this, but there only seems to be one to create Workflow rules and not actual objects:

https://api.clarizen.com/V2.0/services/metadata/objects