Create a green team
Many of the positive changes we want to make at work will require many people to change their habits. Getting a team together will help make this happen.
Your team should include staff from each level in the organization. They need a leader who has the time and authority to get things done. They also need communications people, and events coordinator(s). And, of course, they need a budget. The size of the budget will depend on the size of your organization and the scope of what the team will cover.
Natural Resources Canada has some tools to help you get started.