I do not use a team, I do this by myself. But maybe this will help. (This list is not necessarily sequential, but rather interactive.)
1) Review overall course objectives. (Could involve colleagues and other professionals.)
2) Pick a good quality textbook that has a lot of digital support resources.
3) Determine what I will have to create myself.
4) Use PowerPoint, in outline mode, to organize each topic.
5) Use moodle, start creating topic items. Duplicate/Edit as many topics and resources as possible.
6) Create webpages for student resources. (I use Dreamweaver.)
7) Create quiz questions in moodle.
8) Create lecture videos.
I have tried scripting videos ahead of time. This is time consuming. I currently prefer to focus on recording my voice using my PowerPoints. My time is limited, and advanced scripting really does take a lot of time.
9) I am a professor. No one "approves" my courses. I practice continuous improvement and value students' progress and feedback.
10) I publish my own content. Of course, I use a variety of external resources when practical.
11) Always test everything.