Show company beginning to move after rest (6)
I believe the answer is:
sitcom
'show' is the definition.
(I've seen this before)
'company beginning to move after rest' is the wordplay.
'company' becomes 'co' (abbreviation).
'beginning to' indicates taking the first letters.
'after' is a charade indicator (letters next to each other).
'rest' becomes 'sit' (I've seen this in other clues**).
The initial letter of 'move' is 'm'.
'co'+'m'='com'
'com' after 'sit' is 'SITCOM'.
(Other definitions for sitcom that I've seen before include "Humorous situation drama, in short" , "'Humorous drama based on situations, in short (6)'" , "Shortened form of situation comedy" , "Amusing TV series (abbr.)" , "Friends, for example" .)