Waited in line by indicated entrance for audience (6)
I believe the answer is:
queued
'waited in line' is the definition.
(I've seen this before)
'indicated entrance for audience' is the wordplay.
'indicated entrance' becomes 'cued' (an actor enters after hearing their cue).
'for audience' indicates a 'sounds like' (homophone) clue.
'cued' sounds like 'QUEUED'.
'by' acts as a link.
(Other definitions for queued that I've seen before include "Joined line to wait for sevices" , "Stood in line to get in" , "Lined up" , "Waited in line" .)