Server Administration > Item Type Attributes > Copying Constraints
  
Copying Constraints
You can copy a constraint as a starting point for creating a new constraint with similar values.
When copying a constraint, the copied constraint will take the same constraint method as the original constraint. For example, if the original constraint is a field relationship constraint, the copied constraint will also be a field relationship constraint. You cannot change the constraint method when copying a constraint.
After copying a constraint and modifying the settings as required, you can also perform other edits in the type.
To copy a constraint in the GUI