In offices press one selection for coffee (8)
I believe the answer is:
espresso
'coffee' is the definition.
(espresso is a kind of coffee)
'in offices press one selection' is the wordplay.
'in' says the answer is hidden in the clue.
'ESPRESSO' is hidden within 'offices press one selection'.
'for' is the link.
(Other definitions for espresso that I've seen before include "Strong black coffee" , "Kind of coffee made with steam" , "that's stimulating" , "Italian-style coffee" , "Coffee made under steam pressure" .)