The maturity ladder helps you judge how far a playbook needs to go. It is a concept from the Rollo Academy track, not a Microsoft feature. At stage one, ad hoc, you use the right features but rebuild the sequence from memory each time, which is fine for a quarterly job. At stage two, documented, the sequence and its human checkpoints are written down where a colleague can find them. At stage three, semi-automated, parts run on a trigger in Copilot Studio while the judgment steps stay human.
Stage two is the right stage for almost anything you do weekly or monthly. Very few playbooks need stage three, and pushing one there before it has proven itself mostly swaps "remembering the steps" for "debugging an automation". Once any step runs on a schedule, keep an eye on Copilot Credits too.