Stacks

 You can easily extend an antenna to stack  by command Make Stack.  Follow the dialog box to make vertical/horizontal stack antennas. The design of the original antenna is unchanged, so you can easily make up various formation.

  To make your stacked design permanent, push the Make new description as new antenna button in the Stack window. If you have done this once, you no longer get it back to the original design, that is, a single antenna. This is used to implement a phased driven or a unbalanced driven antenna.

In either case, the number of antennas N is given by [number of horizontal] multiplied by [number of vertical].

This means that:
Number of pulses: •N
Number of wires: •N
Number of sources: •N (voltage = 1/N, identical phase)
Number of lumped-constant: •N

  When making a vertical stack, you can select one of the three ways to set the reference height. It is not taken into consideration in the free space calculation, but is used to define the antenna height in the calculation with ground.