For less than 50 drills, a regular pad, and a regular drill pattern, you can use the Multiple drill facility in the Pad Designer, use this as a single pin in the footprint. For "any" pad shape, "any" drill location, "any" number of drills, draw the shape in the footprint and add a Pin and Vias to the shape, the Pin / Via to Shape DRCs will clear when the footprint is used in a design with a net assigned to the Pin. You could do this in the board for a "one off" symbol but the footprint is preferable if you are going to regularly use the footprint.
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