This operation allows you to evenly distribute a set of selected ports across a specified range. First of all, make sure that “Distribute Evenly” is disabled for the desired side in the object’s Port Auto-Distribute Settings. Then, highlight the ports that you wish to distribute and select “Distribute Selected Ports...” from the Special section of the right-click context menu for ports. The following dialog will appear:
To evenly distribute the ports within the selected range, simply click on the OK button. If, on the other hand, you wish to change the range across which the ports are distributed, you can edit the start and end values on the dialog. The numbers are on a scale of 0 to 10000, with zero being the top of the object and 10000 being the bottom (or the left and right sides of the object, when distributing ports horizontally