When you line up something it can mean placing things in a row or a line. It can also mean to have something prepared or arranged according to its value or importance. You will hear this in lots of contexts, Social and Professional.

1. The teacher lined up the children before leaving the school.
2. The soldiers lined up at the parade for inspection.
3. I have my study lined up ahead of the test on Friday.

1. The boy had a summer job lined up when school finished.
2. Travelers like to have accommodation lined up when arriving in new places.
3. I like to line up my materials before I begin painting so they are all to hand.

1. Could we line up a number of potential candidates for the interviews at the end of the month?

1. We need to have our accounts lined up for the audit.