Hello,
I have strong knowledge and skill-set in developing chrome extensions involving complex feature requirements. I have been developing chrome extensions and web applications for over 5 years now. Based on the requirements mentioned by you, I have started exploring and trying out the screencastify chrome extension already.
I think I should be able to work on this, if we can discuss the details and understand the scope of the project little more.
Let me know if you want to take this further, happy to discuss & work on this.
Thank you.