Same need but back up a few steps...
1. You start a change Request (proposing but not yet making the change) - using the compare tools somehow???
2. All who need to approve the proposed change - using the compare tools somehow???
3. As stated below, including reviewing the change after it has been made and is in WIP
We are in a strictly-regulated environment - no changes are made until they have been proposed, discussed, reviewed, approved. Our primary issue with using Windchill change management is how to handle the redlines / markups / compare tools. Users should be able to use them somehow to propose a change, and others to approve it.