Is there a Graph API endpoint for assigning a group to a Windows 10 Enrollment Completion Page Configuration?

Using the Invoke-MgGraphRequest command with the URI "/beta/deviceManagement/deviceEnrollmentConfigurations/{windows10EnrollmentCompletionPageConfigurationId}/assignments" and the GET method successfully retrieves assignments for the Enrollment Status Page. However, documentation or methods to assign a group to the Enrollment Status Page via the Graph API have not been found. All attempts to deduce the correct approach have been unsuccessful.

Is it possible to programmatically achieve this?