Some explanations from various sources.
Document from the UK offering Guidance for CBTA in British Overseas Territories (thank you DGTA Director Paul Horner). Here’s the direct link to the document.
Here’s the link to the UK Source for this document. Competency Based Training and Assessment | Air Safety Support International
Video Presentation from ICAO on CBTA in general: ICAO Competency-Based Training and Assessment Presentation
Document from the Government of Canada – Competency-Based Training and Assessment Task force. The Dangerous Goods Trainers Association Inc participated in this effort for nearly 3 years (you’ll see former DGTA Chair Rhonda Jessop and DGTA Director Jim Powell mentioned in the opening pages of credits in this effort. Click here for the report document.