added Rule 3.
1)turns up 4 tiles from the stack
2)the first player places the building and do actions
3)the second player places the building and do actions
4)the first player places the neutral building
5)finish the round and start new one
Yes, this is correct.
In setup, each human places two buildings and marks them as their own.
During each round, one building is built by each player, and 1 by the neutral, as above.