BMAD ships four standard phases. Your team adds extension phases (Deploy, Operate, Compliance, …) using the same story cycle — no fork of the methodology.
Solid = BMM built-in
Dashed = you define
Same story cycle: CS / VS / CR / ER
Add org workflow skills (no BMAD core fork): (1) copy a workflow folder e.g. bmad-dev-story → bmad-deploy-verify under .agents/skills/ + .claude/skills/ · (2) team overrides in _bmad/custom/*.toml · (3) register menu code on an agent e.g. Amelia DV · (4) optional bmad-customize to author overrides.