Final answer:
The three collapsible sections in the Create Purchase Order screen are generally known as Overview, Items, and Summary, which encompass basic information, product or service details, and a final review respectively.
Step-by-step explanation:
The names of the three collapsible sections in the Create Purchase Order screen are typically Overview, Items, and Summary.
However, these names can vary depending on the specific software or platform being used. In general, the Overview section contains basic information about the purchase order, such as the vendor and the purchase order number. The Items section includes details about the products or services being ordered, including quantities and pricing.
Lastly, the Summary section provides a complete review of the purchase order before it is finalized, showing all charges, taxes, and the total amount.