Types of Staff
There are eight different types of specialist available for your club. They help manage different things and will cost you 1500€ per week. You will pay this during the economy update, and will also be charged at the time you fire the specialist.
There's no limit to the amount of specialists you can hire, but the effect of every additional specialist is slightly lower than the effect of the first one, which is slightly lower than the effect of the second one and so on...
If you ever have more than ten specialists of the same kind (goalkeeping and assistant coaches are, for this purpose, counted as the same type, although in this case you can have eleven specialists counting goalkeeping and assistant coaches) problems may occur, possibly causing negative effects. Depending on the exact type of specialist, you could see negative effects on the team spirit or to your economy or worst of all a a loss of training. For every specialist above the first ten, the risk of a negative effect increases.
The amount of specialists employed can be checked under "The Club" caption in the "Your Club" menu. This is also where you can hire and fire specialists.