What does the cryptic crossword clue "A Sikh needed to change game for children (4,3,4)" mean?

The wordplay uses an anagram. anagram of A + SIKH + NEEDED = HIDEANDSEEK The answer is HIDEANDSEEK.

A Sikh needed to change game for children (4,3,4)

Daily Mail Cryptic #16691 | 19 Across | 2021-10-22 flower