For all leagues except Dolphins1 (wrapping up initial talent draft)and Jets1 (waiting for league to fill), game planning is now active. So set your line ups, do your game planning and get ready for simulations. You can see a video here with instructions:
https://sandboxsimulations.com/CI/in.../load/lineups/
You'll need to tweak your lineups for injuries and tune your game plan before each game. Setting up for week 1 takes a little time, but after the first week it only takes a few minutes. The site has a bug where sessions time out after a few minutes, so I encourage you to reload the page every few minutes to avoid losing more than a few minutes of work.
Ask questions in this tread and Kevin or I will chime in to answer.