Hi Customer (name blocked for privacy). Thank you for asking your question on Just Answer.
I haven't heard of a specific name. However, it is a style that makes sense. You were there and there was an issue and you decided to go ahead and resolve the issue without a formal chain of command directive. In the interest of time and labor constraints it was easier to just do than to walk away, only to come back after your manager was able to assign you.....
The decision that you made is sometimes referred to as an "Executive Decision", where in the absence of management, a decision is made by someone who is not in a role to make such a decision, to resolve an issue "in the moment" instead of waiting on a directive to do so. This type of action is only advisable if the resolution is correct and doesn't cause further problems. Such consequences keep most non-management employees from making such decisions for fear of making such a mistake.
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.