Getting in gin ordered by directors (8)
I believe the answer is:
boarding
'getting in' is the definition.
(boarding is a kind of getting in)
'gin ordered by directors' is the wordplay.
'ordered' is an anagram indicator.
'by' means one lot of letters go next to another.
'directors' becomes 'board' (board of directors).
'gin' anagrammed gives 'ing'.
'ing' after 'board' is 'BOARDING'.
(Other definitions for boarding that I've seen before include "Sort of party" , "-- School; -- pass" , "Embarkation" , "Staying at school" , "public school arrangement" .)