A normal paid fare is required to enter or leave Sea Island.

The time required to engorge itself with blood and leave the host's gill chamber ranges from 30-145 seconds.

A valid U.S. passport is required to enter and leave a foreign country.

Multiple citizens who travel to a country that claims them as a citizen may be required to enter or leave the country on that country's passport.

Gambian workers were required to either accept the low wages paid to them or leave their employment.

A valid passport is required to enter and leave most foreign countries.

During Rudy Crew's tenure, visitors were required to enter through a special door and leave through a side exit.

In 1502 Muslims were also required to convert or leave.

Position person may be required to provide substitute operational assistance in other areas within the park during emergency or leave situations.

For example ten joiners may be required for the person at the front to receive their item and leave the queue.