To try to change or have an influence on things that are not your responsibility, especially by criticising in a damaging or annoying way. (Cambridge Dictionary)
If you say that someone meddles in something, you are criticising the fact that they try to influence or change it without being asked. (Collins Dictionary)
To interest oneself in what is not one’s concern : interfere without right or propriety. (Merriam – Webster)
Interfere in something that is not one’s concern. (Oxford Dictionaries)
Why Meddling Management Can Be Just as Bad as Micromanagement.