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Right-click on an icon and select Icon Settings from the popup list.
On the Icon Settings dialog box, you’ll notice that your custom icons display in the Icons box on the right. Select the desired icon to assign that icon to the current item.
The Name of the item is taken from the name of the program file, other file, or folder you placed on the dock. The Name displays below the icon when you hover your mouse over the icon. To change the name, edit the text in the Name edit box.
To make the path to the executable file, other file, or folder relative, change the Target text. Remove the drive letter (e.g., “E:”) and insert “..” (without the quotes). See the image below for an example.
Remove the path from the Start in edit box.
Click OK to accept your changes.