The most common and most likely answer to this crossword clue is the 8 letter word DIRECTED
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More clues leading to the result DIRECTED
Buddy explains!

The straight part
We know that "Managed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case managed = directed.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 DIRECTED mean?
DIRECTED verb- To manage, control, steer.
- To aim (something) at (something else).
- To point out or show to (somebody) the right course or way; to guide, as by pointing out the way.
- To point out to with authority; to instruct as a superior; to order.
- To put a direction or address upon; to mark with the name and residence of the person to whom anything is sent.
- In a manner emphasizing one's point of view.
- Having the properties of a directed graph.
- Having the properties of a directed set.