@Martin K. This is currently not available in the product. Id recommend tossing in a RFE if your organization will need this functionality.
Request a RFE:
Are you a thrill seeker who thrives by being on the cutting edge and love using Chrome to access your Dynatrace dashboards?
If you answered yes to both questions, I would suggest trying out this Chrome Plugin.
Yes, I just learned about in the last week or so, and had a great internal session about it this week at our virtual services conference. The Sankey is really awesome, math is great, coloring based on thresholds...all very cool stuff.