Transfer Ownership If Member Leaves

Hello, I would like to clarify something before starting any process. I am leaving my company, and I'll need to transfer ownership of all of my Articulate content (primarily Rise) to my manager. We have a team membership for Articulate. What's the most time-effective way of doing this? 

1) If we do the transfer method described here, would it solve it all at once? Will all of my content then be available for my team later on?

2) Or, do I still need to sign into Rise, and then open up each and every course I ever created (there are several hundred), and transfer ownership course by course? (I hope we can skip this very long process... :) )

Thanks in advance!