Users can access more options by selecting a workflow definition and clicking the 
'More Options' icon at the top right.
The following is a description of the applicable options:
Edit Workflow Detail - Edit the details of the selected workflow definition, including name, description and total workflow days as necessary.
Copy Workflow Definition - Create a new workflow definition within the same project by copying the selected workflow definition.
Activate - Reactivate the selected workflow definition if it's already deactivated.
Deactivate - Deactivate the selected workflow definition if required.
Next Article: More Options on a Workflow Trigger