Which workflow is necessary for setting up a network hierarchy?

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/1-2/user_guide/b_dnac_ug_1_2/b_dnac_ug_1_2_chapter_010010.pdf

The workflow that is necessary for setting up a network hierarchy is Design. The Design area is where you create the structure and framework of your network, including the physical topology, network settings, and device type profiles that you can apply to devices throughout your network. You can create a network hierarchy that represents your network’s geographical locations, such as sites, buildings, and floors. You can also define global network settings, such as device credentials, IP address pools, service provider profiles, and network servers. You can also create network profiles, which are collections of design settings that you can assign to devices based on their roles and functions1.

References:

 1: [Cisco DNA Center User Guide, Release 2.2.3 - Design Network Hierarchy and Settings [Cisco DNA Center] - Cisco]