What inspired this wish list request?
Currently, when user plot charts with build-in user interface (such as Fit X by Y, Variability / Attribute Gauge (Multivari Chart, etc.), row legend can only be done by right click charts and select <Row Legend> from the menu. User need to trigger row legend manually again and again if chart window closed / plot charts in a new window for side-by-side reference, etc. It is not recall-able from anywhere.
Hence, hope it could be included in UI and make it recall-able to reduce the needs to manual trigger for it.
What is the improvement you would like to see?