Establish an invisible thread of trust between all the parties, always emphasize to the SME that:

1. The writers who are interviewing them are there to help them convey what they want to say in plain English
2. They have the authority on how the interview will be conducted (as long as they are comfortable with everything)
3. They have the last say on everything, so you as the SEO need to be assertive that whatever goes out there in the public was reviewed and approved.

Creating a workflow that will determine how things will flow in the pipeline will give your team a quick overview of what will happen with the draft that was created.

Having this mind map will give trust to all parties that there is a process being implemented to make sure that the asset that was created is properly being taken care of.

If the Topic Expert wants to revise something during the review process, he/she can address it to the writers before it goes to the Editor for Proof Reading.

Seamless Process, Better Results. 

As an SEO, company managers might get excited about the collaboration with an expert because the content will have more authority, thus they might request these particular insertions:

• Tell them all of our features.
• Make sure you mention these selling points!
• Don’t forget we won those two awards last year.
• Can you drop this quote from our CEO in there?
• Here are two case studies you should mention.

We can do "some" of this in a moderate way but make sure that the content is for the readers. Nobody cares for your companies achievements unless you show care first by providing informative content.