Some itineraries require more complicated arrangements, which must be made by the passenger.

Connections to a second airline will require arrangements with both airlines.

As a result, tours are limited and often require reservations or special arrangements.

The best compromise I could arrange with my conscience required devious and difficult arrangements.

And it requires permanent military arrangements to contain Iraq within internationally recognized borders.

Most useful structures require complex and thermodynamically unlikely arrangements of atoms.

They require special schools and special arrangements, to name but one example.

That requires a neat process and proper arrangements for reception.

Reaching the same markets through newspapers usually requires complicated arrangements, with separate deals for price and placement on newspaper pages.

Such access may, at the fire department's discretion, require additional training or other arrangements.