There isn’t one.
In this post on leadership and management I introduced a description of leadership and management.
The bigger the “leadership” aspect of your role, the more often you’ll be faced with situations for which there isn’t a roadmap.
They’re too complicated. Or too new. Or too unexpected.
They’re the opportunities that hadn’t been thought of before. The problems that no-one predicted.
When these things happen, leaders who are used to working on the management side can often get stuck looking for the policy or procedure to follow.
But in these situations you just have to figure out what to do.
Use your best judgement. Make a decision. And get people moving.