If you want to scale agile beyond one team you should probably use an agile coach to help you on your journey
But watch out – some have signed the agile for evil manifesto and might not be a good fit for where you and your team want to end up.

This is the manifesto I offered the team in our course … and some may have signed it. Others refused to sign and might be a better fit if you are hoping to work for the forces of good