Local Chapter concept is Decidim practicing decolonization:

Local Chapter takes sovereignty for promoting Decidim locally and organizing their community. Under certain conditions, a Local Chapter will be recognized by the Decidim Coordination Committee publically and will evolve through a regenerative autonomous Local Chapter. A local chapter is a local Decidim community that promotes Decidim, discuss new features in their own languages, exchange knowledge on Decidim usages, organize themselves to improve Decidim products. It’s a bridge between local and global Decidim community.