Start with the big picture. Explain why you're making these changes, and how it will help them and the company to be more productive. Talk through some scenarios, answer their questions, and then chisel the new program in granite. Appoint someone to watch over the implementation of the changes. Remember, we're talking about habits here, and habits are hard to change.
Someone needs to monitor the new program, reminding everyone involved of the new way to do things.
Once you've augured out the drainage pipes in your home, you can probably rest easy for a year or so. So too with sales system gunk. Once you've gone through this process and cleaned it up, you won't need to revisit the issue for a while. Rest easy, you've just made your sales system more productive. Take this simple self-assessment in order to obtain a quick glimpse of how clogged your sales system may be.