The most common and most likely answer to this crossword clue is the 10 letter word ENTHRONING
I've seen this crossword clue in Independent
E
N
T
H
R
O
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I
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G
Buddy explains!

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 ENTHRONING mean?
ENTHRONING verb- To put on the throne in a formal installation ceremony called enthronement, equivalent to (and often combined with) coronation and/or other ceremonies of investiture
- To help a candidate to the succession of a monarchy (as a kingmaker does), or by extension in any other major organisation.
- An act of enthronement.