You can set the dominant control in one of the following ways when selecting multiple controls:
SHIFT+CLICK: The dominant control is the first control you select using SHIFT+CLICK.
CTRL+CLICK: The dominant control is the last control you select using CTRL+CLICK.
Select Objects pointer on the Toolbox: The dominant control is nearest the mouse pointer when you begin drawing the rectangle over the controls you want to select.
If you CTRL+CLICK twice on a selected control, that control becomes the dominant control.