Crossword Genius

She’s lesser radar but it’s the practices for the performance (5,10)

Ross

I believe the answer is:

dress rehearsals

I'm a little stuck... Click here to teach me more about this clue!

'she's lesser radar but it's the practices for the performance' is the definition.
I can't tell whether this definition defines the answer.

'she's lesser radar but it's the practices for the performance' is the wordplay.
'she's lesser radar' can be anagrammed to 'DRESS REHEARSALS'.
Though, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Another definition for dress rehearsals that I've seen is " full-scale practices".)

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