How to quickly distribute SecureNT Root Certificates on PC/Mac

Distribute Certificates to Windows Client Computers by Using Group Policy

Here are three articles giving steps to deploy (install) Root certificates on Windows client computers using Microsoft Group Policy Objects (GPO) in a  Microsoft Windows Active Directory setup.

1. https://docs.microsoft.com/en-us/windows-server/identity/ad-fs/deployment/distribute-certificates-to-client-computers-by-using-group-policy

2. https://www.entrust.com/knowledgebase/ssl/how-to-deploy-the-private-ssl-root-ca-to-a-workstation-with-windows-server-2012-using-gpo

How to configure Mac computers to request digital certificates from a certificate authority using Parallels Device Management

https://kb.parallels.com/en/123964

Firefox

Here is an article that says how to install a Private Root Certificate in the Firefox browser.

https://support.mozilla.org/en-US/kb/setting-certificate-authorities-firefox