diptrace how can i make edge smd pads

[sairfan1]

I'm not sure what exactly its called, please refer to attached picture I want to make this kind of smd pads on the edge of pcb how can i do it using diptrace.

[Neilm]

Those are known as castellated pads. I have made similar by putting plated through holes on the edge of the PCB, such that when it is routed out the hole is cut leaving half of it on the edge of the PCB. Best thing would be talk to your PCB supplier