How do I solve 11 down in Times Cryptic 3295?

Question

Accepted Answer

11 down reads "Severely criticise Kate changing a role" (4,5 letters); the answer is TAKEAPART. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Severely criticise Kate changing a role (4,5)

11D — Severely criticise Kate changing a role (4,5) — TAKEAPART