The chief legal officer who authored a letter demanding law firms improve diversity or risk losing clients is pushing the movement forward with a newly released set of strategies for general counsel.

When Michelle Fang, the CLO of car-sharing company Turo, began spreading the letter in January it struck a chord with the more than 170 general counsel who initially signed on to her message. Since then, around 60 more companies’ top lawyers have added their names, including the legal department heads of Axiom, Sophos and NetApp Inc.