Explanation
Time-dependent conditions are conditions that have different values depending on the validity period. For example, you can have different prices or discounts for different time intervals within a contract or a scheduling agreement. You can configure the usage of time-dependent conditions for these two documents in Customizing for Materials Management under Purchasing -> Conditions -> Define Price Determination Process -> Define Schema Determination -> Determine Schema for Standard Purchase Orders -> Assign Schema Group to Purchasing Organization. References: SAP S/4HANA Sourcing and Procurement | SAP Learning, Course S4520, Unit 5, Lesson 1.

Explanation
When you post a goods receipt to stock with reference to a purchase order, you can perform the following actions:
Split the quantity received to multiple storage locations, which means that you can distribute the goods receipt quantity among different places where materials are physically stored within a plant.
Post partial order quantity, which means that you can receive multiple partial deliveries for the same purchase order item. References: SAP S/4HANA Sourcing and Procurement | SAP Learning, Course S4510, Unit 2, Lesson 1.