The key considerations are engaging first with the line leadership team of the community of leaders who are micro culture leaders

Once we have received the buy in of these leaders and then enable the micro culture leaders with proper toolkit etc we have got the alignment plan moving

Step it to ensure they start executing on the expectations and remove bottle necks as required for them to flow

Recognise those who do a great job and highlight those names who are taking time to align and coach them. Along with that understand and remove bottle necks and simplify. Help them understand how is is going to impact their Businesses as they carry that pressure

Once this is done keep a regular plan of review to measure progress and keep making the necessary changes

So align, develop, review, recognise and measure impact on a continual basis and you surely should be able to drive the change. Refer to the book tribal leaders for measuring effectiveness as well as define plan of actions.