Must a kilt model be doing more than one job? (9)

I believe the answer is:

multitask

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'doing more than one job?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'must a kilt model' is the wordplay.
'model' indicates an anagram.
'must'+'a'+'kilt'='mustakilt'
'mustakilt' anagrammed gives 'MULTITASK'.

'be' acts as a link.

Can you help me to learn more?

(Other definitions for multitask that I've seen before include "execute jobs simultaneously" , "Do things simultaneously" , "To perform several jobs" .)

I've seen this clue in the Sydney Morning Herald.

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