I told you this was going to be grim. The player with only two large stacks goes first. Each player's first several moves will be to place one of their beginning stacks on any square on the half of the chessboard that faces them. Remember, each player begins the game with large and medium stacks - two of one, and three of the other. Once all five of your starting stacks are on the board, you can start moving them.
All stacks have a rook's move, in chess terms.
That is, they can move as many unoccupied squares as you want, in an orthogonal direction. See Figure 2 below for an example of a stack's possible moves. Moving one stack in either fashion constitutes one turn. Small stacks are Children. When you first place a Child, it must be placed on an empty square directly adjacent to one of its parents.