The most common and most likely answer to this crossword clue is the 11 letter word CENTREPIECE
I've seen this crossword clue in The Sunday Telegraph
C
E
N
T
R
E
P
I
E
C
E
More clues leading to the result CENTREPIECE
Buddy explains!

The straight part
We know that "focus of attention" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case focus of attention = centrepiece.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 CENTREPIECE mean?
CENTREPIECE noun- An ornament to be placed in the centre, as of a table, ceiling, etc.
- A central article or figure.