Form a change management team. The group should consist of management from across the organisation, trusted and influential staff members (the 'special forces' from the video on the previous page), people working in the 'frontline' and beneficiaries.
Collect information about the changes in the sector you are dealing with: demands from your beneficiaries, new technologies, changing income streams, new government regulations, etc.
Analyse how this affects your work as an organisation.
Think about how you can involve your team in the steps along the way. The more you involve them, the less scary the change will be.