The most common and most likely answer to this crossword clue is the 10 letter word OVERSEEING
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More clues leading to the result OVERSEEING
Buddy explains!

The straight part
We know that "Managing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case managing = overseeing.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OVERSEEING mean?
OVERSEEING verb- To survey, look at something in a wide angle.
- To supervise, guide, review or direct the actions of a person or group.
- To inspect, examine
- To fail to see; to overlook, ignore.
- To observe secretly or unintentionally.