For new words, is there an appointed person who creates/decides on 'official' signs for ASL?

When new words are introduced to our language, an old example – internet, who is the one to create the sign for the word? Usually new words are finger-spelled until a sign has been established. As of now, ‘internet’ has a couple different signs..but who is the person that is deciding on these signs & making them official? Is there even a person at all or is it a ‘word-of-mouth’ kind of thing? I’d love to know how new signs are created & become understood within the community.