prearrangement

After a few songs, the band’s frontman called Mr. Blinken onstage on Tuesday and, by prearrangement, America’s top diplomat slung a red Gibson guitar over his shoulder.

By prearrangement, “Dan Rather: Stories of a Lifetime” ran for only two performances.

Alongside regular auditing by independent groups, Mr. Savman said, H&M still frequently sent its own employees to monitor factories, sometimes by prearrangement but often unannounced.

Bush had stopped by prearrangement at the NCR exhibit before addressing the grocers.

Different rules apply to green cabs at airports, where they can drop off passengers but cannot pick them up, except by prearrangement — for example, if they are sent there by a dispatcher.