Ambassador Program - Update the program, roles and application process (issue #29)

[bajpaigarima]

The Ambassador program has no reference in the Charter. As per the management instruction that we must update

• https://github.com/cdfoundation/community-ambassador-program
  -Document Ambassador Chair Role
  -Application process

[bajpaigarima]

https://docs.google.com/document/d/18T4ze4VuXBjXPgy2Kal3AsOmjypHhqub95ZfjBmOzmk/edit?usp=sharing