Refine and Integrate Avatar

I need assistance from someone experienced with LiveAvatar from Heygen. The goal is to enhance and specify its knowledge base so that it is coaching on the content of a learning module (PowerPoint deck) and ideally have it ask questions that the learner must respond to correctly.

Key Requirements:
- Refine avatar's knowledge base and instructions
- Improve functionality
- Integrate with email and PowerPoint
- Possibly enhance appearance, animations, or voice

Ideal Skills and Experience:
- Proficiency in avatar development and refinement
- Strong integration skills with software like email and PowerPoint
- Experience in developing interactive knowledge bases
- Familiarity with customization options for avatars

Please provide examples of similar work done.