No chance that any user without developer insights and without an understanding of MITK geometries is able to understand the rather long text. It also has typos. We should strive for a less accurate but understandable description like:
The reference image is a dynamic image over time. Create a static segmentation that is identical for all time steps of the reference image or create a dynamic segmentation to be able to segment time steps separately? (Button: Static segmentation) (Button: Dynamic segmentation)
Check documentation for screenshots.