I have tried to save formation, but with no success. I only have “default” even if I create new or save current to other name. Do I do something wrong?

You have to press enter after put a new name

Thanks. I have some other problems too. Where are my coaches? How to I drop substitutes i game formation. I think I have tried 5 different ways with no success.

Coach Level: Go to Management => Stadium => change the coach level according to wish. There are mo coaches per se. Just the coach level, which decides how fast your players grow.

Substitutions: Go to formation => Formation Strategies and there you can set the substitutions

Thanks. Is there only option to set certain coach level? I would like to train specific skills like attacking skills. Is it possible?

Not with the current design, the only option is to adjust the coach level and it will affect all skills equally.