Creating union and groaning is disgusting (10)

I believe the answer is:

organising

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

'creating union' is the definition.
I can't tell whether this defines the answer.

'groaning is disgusting' is the wordplay.
'disgusting' indicates anagramming the letters (a disgusting or rotten ordering of the letters).
'groaning'+'is'='groaningis'
'groaningis' anagrammed gives 'ORGANISING'.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for organising that I've seen before include "arrangement" , "Systematically arranging" .)

I've seen this clue in The Independent.

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