In my mini dxf tutorial I connected a pad to custom graphics.
Each pad has a number (or more correct a text string as name).
If you name the rings in your footprint with 1 through 6, then you can use any simple 6-pin connector schematic symbol and connect wires to it in Eeschema, and link it to your custom footprint.
If you want to make custom schematic symbol that’s also possible, but a bit more work.