Other than Bring to Front and Send to Back, the position section will not be available unless multiple controls are selected. Holding the Shift or Ctrl key while clicking on controls allows multi-selection.
Bring to Front: Brings the control to the front of the report, in front of all other objects.
Send to Back: Sends the control to the back of the report, behind all other objects.
Equal Horizontal: Spaces the controls equal distances away from each other horizontally.
Increase Horizontal: Increases the horizontal spacing between controls.
Decrease horizontal: Decreases the horizontal spacing between controls.
Equal Vertical: Spaces the controls equal distances away from each other vertically.
Increase Vertical: Increases the vertical spacing between controls.
Decrease Vertical: Decreases the vertical spacing between controls.