I dont think its available in AEM 6.2. However you can customize the workflow model selection page in touch ui and add a custom copy action. Over the workflow model in apps and add new action as given below: /apps/cq/workflow/admin/console/content/models/jcr:content/actions/selection/copypage Go to this node /libs/wcm/core/content/sites/jcr:content/actions/selection/copypage/granite:data Copy the copypage node and paste it under /apps/cq/workflow/admin/console/content/models/jcr:content/actions/selection
After this you may need to make more changes.
You will be required to define your custom copy action model.copy.js under /apps/cq/workflow/admin/console/components/clientlibs/js/dialogs For example. /apps/cq/workflow/admin/console/components/clientlibs/js/dialogs/model.copy.js