The currently titled IMCA Competence frameworks for Freelance personnel and they can be found on the IMCA website. You will find links to the documents in the bottom two paragraphs.
For general information on the IMCA competency scheme see these links.
And this video link will tell you something of the competence scheme.
This link will take you to the document you need to download and print off and start getting filled in for the bell diver competency.
This link will take you to the document you need to download and print off and start getting filled in for the air (surface supplied) diver competency.
This link will show you how to fill in the IMCA competency document and get it signed off (note it is ROV based, but gives you an indication of what is required).