Hanging about for work in restaurant (7)

I believe the answer is:

waiting

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

'hanging about' is the definition.
The answer and definition can be both to do with social activities as well as being present participle verbs.
Perhaps they are linked in a way I don't understand?

'work in restaurant' is the wordplay.
'work' becomes 'wait' (waiting is a kind of working).
'in restaurant' becomes 'ing' (I can't explain this - if you can you should give a lot more credence to this answer).
'wait'+'ing'='WAITING'

'for' is the link.

Can you help me to learn more?

(Other definitions for waiting that I've seen before include "Serving at table" , "holding back" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.