You can train:
  • 10 Architects
  • 10 Engineers
  • 10 Constructors
  • 20 Designers
  • 20 Builders
  • 20 Mechanics

Once you reach the limit, the function of training Specialists will become unavailable.
To see how many Specialists you have trained click the Inventory icon in the right lower corner of your screen and then click the Specialists Icon.

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