If you have never set up NAPPS integration using this settings page, then you can safely ignore it. It is not used to provide Workspace ONE functionality. This page is only intended for customers who have already used it to set up integration.
Newer Integration Method
For more information about integrating Workspace ONE UEM with Identity Manager and deploying Workspace ONE with single sign-on to devices, see the Workspace ONE Quick Configuration Guide, available at https://docs.vmware.com/en/VMware-Workspace-ONE/index.html.