Press cast to drink beer, facing issue in rep (11)
I believe the answer is:
salesperson
'rep' is the definition.
(as in a sales representative)
'press cast to drink beer facing issue' is the wordplay.
'cast' indicates anagramming the letters (letters are dispersed or cast around).
'to drink' indicates putting letters inside.
'beer' becomes 'ale' (type of beer).
'facing' is a charade indicator (letters next to each other).
'issue' becomes 'son' (issue can mean someone's offspring).
'press' with letters rearranged gives 'ssper'.
'ssper' placed around 'ale' is 'salesper'.
'salesper'+'son'='SALESPERSON'
'in' acts as a link.
(Other definitions for salesperson that I've seen before include "Shop worker" , "Shop attendant" , "Retail worker" , "Shop assistant" , "Shop server" .)