Most ADGA shows allow someone else to show their goats. But, remember, if the person showing happens to win, they cannot leave the ring with the goat, you have to bring the papers to the judges desk, then sign the winning sheet if instructed to.
I hate showing- I'm a behind the scenes person. I usually make my kids show! (if they are around). I had my day in the sun with horse showing and dog shows. I'm happy not being in the ring! But, you should at least try.
Watch videos of showing and practice, a lot. Most people do not watch you, anyway. The audience is watching their goat interests.