Cryptic crossword clue
One making arrangements for new doctor on air 11

The most common and most likely answer to this crossword clue is the 11 letter word COORDINATOR

I've seen this crossword clue in Financial Times
C
O
O
R
D
I
N
A
T
O
R

Buddy explains!

The straight part
We know that "One making arrangements" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one making arrangements = coordinator.
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 COORDINATOR mean?

COORDINATOR noun
  1. One who coordinates.
  2. An assistant coach responsible for a particular facet of the game, such as defense.
  3. (grammar) A member of a lexical class of words that joins words, phrases, and clauses at the same syntactic level.

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