How to set a region for a player.
 

I have a player that is wanting to have the trait "Glory of Old". I have the source book Dwarves of Golarion added, but we can not find where to set the region (Five Kings Mountains) for the player. This is a regional trait, so it needs that region. I know I can set things for unrestricted traits and backgrounds, but was hoping to just be able to have the player set their region instead. Am I missing where that is, or is it in a different source book that I am not aware? Thanks for the help.

There's nothing to set; Hero Lab doesn't check where your character is from for Regional Traits. A few are restricted by Race or other things, but that one isn't. Dwarves of Golarion is the correct source.

As always: double-check that the source is enabled on the character, that the Validation Levels Shown dropdown is set to Hide Nothing, and that the search box is empty.

I've just checked. You don't need to set a region to take this trait. That said, you set your homeland in the History tab. You don't specify a specific region, though, more like a "city" or "moutains" or whatever.