The "Franklin Clause", right there in the FAA document for all to see........

"Recreational flyers should be able to explain to an FAA inspector or law enforcement officer which CBO’s safety guidelines they are operating under during any given flight. However, an operator does not need to be a member of a CBO to fly under its safety guidelines. The FAA maintains a website of officially recognized CBOs at https://www.faa.gov/uas/recreational_fliers/."