The elements are stored in the files with the .etc extension.
The directory to store the elements can be set in the Application Settings dialog.
To add an element from a file to the Workflow Designer select either Actions ‣ Add element with external tool in the main menu or the following icon on the toolbar:
<center> <br> <img src="/wiki/download/attachments/2097203/external_cmd_tool_add.png"/> <br> </center>
In the appeared dialog select the required .etc file. The element is added to the group on the Palette and appears on the Scene.