[DLC when game from Mac App Store]

Thanks everyone. I just wasn't looking in the right place.

[DLC when game from Mac App Store]

I purchased the base game from the Mac App Store and all is fine. I'd like to purchase some DLC, but the Obsidian site takes me to GOG.com and that site says I must purchase the base game from them to purchase DLC. How do I get DLC when I've purchased from the Mac App Store?