Custom Melee Natural Weapons
 

I'm trying to convert a creature from Bestiary 2, and either I am missing something, or there is no way to change the damage for Custom Melee Natural Weapons. My two choices seem to be 'Default', which is 0, and Standard, which is 1d6. What I want to do is change it to 1d3.

Also, what the heck does the Attack column setting actually do?

You can override damage dice with a permanent adjustment in the Customizations page. The attack column refers to the attack modifier columns on the monster/NPC creation tables in the back of the Alien Archive.

That did the trick, thanks.