Board.Script.set_BoardSlotGameObjects(); is used to set the GameObjects

public class Board : MonoBehaviour {

    public static Board Script;

    #region BOARD CARD SLOTS
    // The arrays of Board Objects used to set Active/Inactive on card Selection
    // We hold 2 arrays for each GameObject type:
    // 1 for the Group of children objects, another for the Children in each group
    public GameObject Board_Grouped_Clubs_Bottom;      public Transform[] Clubs_Bottom = new Transform[14];
    public GameObject Board_Grouped_Clubs_Top;         public Transform[] Clubs_Top = new Transform[14];
    public GameObject Board_Grouped_Spades_Left;       public Transform[] Spades_Left = new Transform[14];
    public GameObject Board_Grouped_Spades_Right;      public Transform[] Spades_Right = new Transform[14];
    public GameObject Board_Grouped_Diamonds_Left;     public Transform[] Diamonds_Left = new Transform[14];
    public GameObject Board_Grouped_Diamonds_Right;    public Transform[] Diamonds_Right = new Transform[14];
    public GameObject Board_Grouped_Hearts_Bottom;     public Transform[] Hearts_Bottom = new Transform[14];
    public GameObject Board_Grouped_Hearts_Top;        public Transform[] Hearts_Top = new Transform[14];
    #endregion

    void Awake()
    {
        Script = this;
    }

public void set_BoardSlotGameObjects()
    {
        // Get the Groups of each card type Group Object
        Board_Grouped_Clubs_Bottom = GameObject.FindGameObjectWithTag("ClubsBottom");
        Board_Grouped_Clubs_Top = GameObject.FindGameObjectWithTag("ClubsTop");
        Board_Grouped_Spades_Left = GameObject.FindGameObjectWithTag("SpadesLeft");
        Board_Grouped_Spades_Right = GameObject.FindGameObjectWithTag("SpadesRight");
        Board_Grouped_Diamonds_Left = GameObject.FindGameObjectWithTag("DiamondsLeft");
        Board_Grouped_Diamonds_Right = GameObject.FindGameObjectWithTag("DiamondsRight");
        Board_Grouped_Hearts_Bottom = GameObject.FindGameObjectWithTag("HeartsBottom");
        Board_Grouped_Hearts_Top = GameObject.FindGameObjectWithTag("HeartsTop");

        // In these groups, find each child and assign it to its array
        Clubs_Bottom = Board_Grouped_Clubs_Bottom.GetComponentsInChildren<Transform>();
        Clubs_Top = Board_Grouped_Clubs_Top.GetComponentsInChildren<Transform>();
        Spades_Left = Board_Grouped_Spades_Left.GetComponentsInChildren<Transform>();
        Spades_Right = Board_Grouped_Spades_Right.GetComponentsInChildren<Transform>();
        Diamonds_Left = Board_Grouped_Diamonds_Left.GetComponentsInChildren<Transform>();
        Diamonds_Right = Board_Grouped_Diamonds_Right.GetComponentsInChildren<Transform>();
        Hearts_Bottom = Board_Grouped_Hearts_Bottom.GetComponentsInChildren<Transform>();
        Hearts_Top = Board_Grouped_Hearts_Top.GetComponentsInChildren<Transform>();
    }
}