People usually add the square pad to show pin 1, so it's up to you. You make the square pad the same size as the round pads and use the same stroke. The white in the middle is the size of the hole.
I forgot to mention, try to make all silkscreen black, because in Inspector the icon only shows floating pads with no outline so it's hard to tell what it is.
In search all similar parts will show, so your 3 will come up, but if you want the Inspector selectable you put them in the same family.
I think it's Chapter 8