​Help to convert recourses to business (I have a team of 7 Senior Devs ready to work, but I’m a Junior. How do I actually run this agency?)

Hey guys, I’m in a weirdly lucky position but I don’t want to mess it up.

I have 5-6 friends who are all Senior-level (2 Frontend, 2 Backend, 2 Data Engineers, and a Business Analyst). They all have solid day jobs, but they’ve told me they are 100% ready to take on side projects if I can find them.

I’m a Junior dev myself. My plan is to start an agency on Upwork/LinkedIn, handle the “client hunt,” manage the projects, and take a commission/cut for bringing in the work.
Please help me how to do it. Share your experience!