...

To modify the UDF, click Edit. 

Context menu:

• Rename: Rename your user-defined function.
  
  

  Info
  NOTE: UDF names must be unique within the project or workspace. Name changes are propagated to the recipe steps where they are referenced.

• Duplicate: Create a copy of the user-defined function.

• Transfer ownership: (Available to owner or admin only) Transfer ownership of this asset to another user. See Transfer Asset Ownership. 

• Delete: Delete the UDF. 

  Info
  NOTE: When a UDF is deleted, any recipe steps that reference it are broken. You should review the Used In tab before deleting.

  Warning
  Deleting a UDF cannot be undone.

...