This uses a charade (joining word parts) combined with an anagram. A charade puts different elements together in sequence, while an anagram rearranges letters based on an indicator word.
Start with a boy band name that's also a number, then add an anagram of 'REFS' (look for the anagram indicator 'abused'). The boy band FIVE goes first, followed by the letters of REFS rearranged.
Answer: FIVEFERS | FIVE (the boy band) + anagram of REFS (indicated by 'abused') gives FIVE + FERS = FIVEFERS, which are cricket bowling achievements of taking five wickets.