Hi,
I am making a PCB that i want to incorporate a Quick Solder board. I heard it is related to Castellated holes but all the documentation links from previous posts return an error so i am confused.
I want to make something that looks like this:

Is there any way to achieve this effect? and if so how would i accomplish this task?
Thank you
Chrome
67.0.3396.99
Windows
10
EasyEDA
5.6.10