Adding new natural weapons

[Sevisin]

Hello,

I was building a dragonwrought kobold and put in the Dragon Tail feat. The feat gives a natural attack based on the character's size. When I went to the weapons section (and the in-play and tactical console), the tail attack wasn't there. How would I go about inserting the attack? I also noticed the same for Snap Kick and a number of other feats.

-S