Skill for creating parallel development plans with multiple developers. Leverages git worktree for branch strategy, task dependency analysis, critical path calculation, developer role assignment, and timeline creation. Use for requests like "create a parallel development plan", "I want to develop with multiple people simultaneously", "divide work with worktree", or "maximize development parallelization". Also supports on-demand parallel tasks for quick fixes with requests like "fix XX in parallel", "do YY with worktree", or "add parallel task".