All waiting - to be signed? (5,2)

I believe the answer is:

drawn up

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'all' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for drawn up that I've seen before include "Stopped" , "Come to a halt" .)

I've seen this clue in The Irish News.

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