Crossword Genius

Minister is at desk inside making changes (7)

Ross

I believe the answer is:

revises

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'changes' is the definition.
Although both the answer and definition are verbs in their -s form, I cannot understand how they can define each other.

'minister is at desk inside' is the wordplay.
'minister' becomes 'rev' (short for reverend).
'at' means one lot of letters go next to another.
'inside' means to look at the middle letters.
The middle letters of 'desk' are 'es'.
'rev'+'is'+'es'='REVISES'

'making' acts as a link.

Can you help me to learn more?

(Other definitions for revises that I've seen before include "Prepares for exams" , "Checks, reviews" , "Swots" .)

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