Set out a grid with 2.54 by 5mm and snap contacts/circles to the centres. Put them in a group called copper0, and then put that in a group called copper1. copper0 is the bottom layer, and because it's in copper1 it duplicates it on the top layer. Next make a rectangle, I would ignore the toggles and make it 12.1mm by the length for the number of pins you want, and then put that in a group called silkscreen.
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