The most common and most likely answer to this crossword clue is the 6 letter word MANEGE
I've seen this crossword clue in Financial Times
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More clues leading to the result MANEGE
Buddy explains!
The straight part
We know that "Where staff, say, get introduction to equines" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where staff, say, get introduction to equines = manege.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 MANEGE mean?
MANEGE noun- The art of training and riding horses; dressage.
- A riding school.
- A riding arena (enclosed, but usually unroofed area, in contradistinction to a riding hall).
- The movements of a trained horse.