How to actually upload Team Designs, and other stuff

[MaSTA SoLIDUS]

So I'm getting frustrated.

I started a MyGM, spent a lot of time designing the team, and then added a downloaded team second and the image assets for the second team overwrote the first one. No fixing this right now, fine.

So I start a second MyGM, and I wonder: how do you actually upload your own team designs? It'd be so much easier than actually making from scratch again.

I don't see how or where to do it. What am I missing?