Explanation
To make sure that consignment purchase orders utilize a different number range than other purchase orders, you must customize a new document type, assign a new number range, and assign the item category for consignment only to this type. This way, you can differentiate consignment purchase orders from other types of purchase orders based on their document type and number range. The item category for consignment is K, which indicates that the goods remain in the vendor's ownership until they are consumed.

Explanation
One difference between the SAP Fiori launchpad and the classical SAP Graphical User Interface (SAP GUI) is that the SAP Fiori launchpad is role-based, while SAP GUI often offers single complex transactions for many user roles. This means that the SAP Fiori launchpad provides a user-friendly and personalized access to the applications and tasks that are relevant for a specific user role, while SAP GUI often requires users to navigate through menus and screens that are not relevant for their role. References: [SAP S/4HANA Sourcing and Procurement | SAP Learning], Course S4500, Unit 1, Lesson 1.

Explanation
Some effects of parking a purchase order are:
You can use Situation Handling to alert users about incomplete documents, which means that you can notify the responsible users or approvers about the parked purchase orders that need their attention or action.
You can use a workflow to request completion of the document, which means that you can automate and streamline the process of completing and releasing the parked purchase orders by using predefined rules and conditions. References: SAP S/4HANA Sourcing and Procurement | SAP Learning, Course S4520, Unit 1, Lesson 1.