импровизированная сцена(The group huddled in 20 huge military tents to keep warm against the winter chill while musicians performed on a makeshift stage and opposition lawmakers paid periodic visits to boost morale. // uk.news.yahoo.com 4uzhoj)
процессуальные действия(только в контексте: A criminal defendant has the right to an attorney at any critical stage of the criminal process – interrogation, trial, sentencing and initial appearance.4uzhoj)