The most common and most likely answer to this crossword clue is the 2 plus 3 plus 3 plus 2 plus 3 plus 4 letter word AT THE TOP OF THE TREE
A
T
T
H
E
T
O
P
O
F
T
H
E
T
R
E
E
Buddy explains!
The straight part
We know that "High-up boss may be here" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case high-up boss may be here = at the top of the tree.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.