Please help me to solve those two questions. Question 1, I don't know what are function and time ticket and why it is useful. I need help!

1) What is material requisition form? What is its function? What is time ticket? Why it is useful?

2) The textbook tells us that, during an inventory audit, the extent & timing of tests related to ending inventory can be reduced or altered, if the client has an accurate/well-controlled perpetual (inventory) system. Please explain the meaning of this sentence.