Which component of the Cisco Catalyst SD-WAN Manager allows a network manager to associate configuration groups with WAN Edge routers?

The workflow library is a repository of all available workflows, not the specific workflow responsible for associating configuration groups with devices.

A feature template is a modular configuration building block that is part of a configuration group or device template, but it does not perform the association or deployment itself.

The "deploy configuration group workflow" in Cisco Catalyst SD-WAN Manager is the specific component that orchestrates the process of associating and applying a collection of configuration templates and policies (a configuration group) to targeted WAN Edge routers.

While custom workflows might be created, the standard and direct method for associating configuration groups with WAN Edge routers is through the predefined "deploy configuration group workflow."