Greg,
Greetings from Syncfusion.
We have reviewed your query but at present we do not have support to achieve your requirements.
We have already logged a feature request for the requirement. You can track the status of the feature from the feedback link given below.
Feedback link - https://www.syncfusion.com/feedback/7428/multiple-baseline-support-in-gantt
We have already lined up some major features, we could not implement this support immediately. We will implement this and include it in any of our upcoming releases. Please cast your vote on this feature. Based on the customer demand we will prioritize the features in our upcoming road map. You can communicate with us or track the status of the feature using the feedback link.
Regards,
Sridharan