Crossword Genius

Indicate the last job typist wants boss to do today? (8)

Ross

I believe the answer is:

signpost

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

'typist wants boss to do today?' is the definition.
I can't judge whether this definition defines the answer.

'indicate the last job' is the wordplay.
'indicate' becomes 'sign' (I've seen this in other clues).
'the last job' becomes 'post' (post is a kind of job. I am not sure about the 'last' bit.).
'sign'+'post'='SIGNPOST'

Can you help me to learn more?

(Other definitions for signpost that I've seen before include "Wayside indicator" , "Indication of direction" , "Waymark" , "this will give you directions" , "It indicates direction and distance" .)

I've seen this clue in The Telegraph.
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