This has been developed by Jason Lattimer – you can find more information on his GitHub page https://github.com/jlattimer/CRM-Note-Workflow-Utilities and from there you will be able to see a link to download it.
Jason also has a blog that you can find https://jlattimer.blogspot.com/2018/03/updated-crm-workflow-utilities.html
In summary his solution will provide Custom workflow actions that deal with notes in Dynamics CRM 2015, 2016, & D365/CE (v7.0+) (although more items may have been added after writing this)
- Check Attachment
- Copy Note
- Move Note
- Delete Attachment
- Delete Attachment By Name
- Delete Note
- Update Note Text
- Update Note Title
To go back to my ‘index of workflow tools’ have a look at my blog which can be found here