The above webinar recording was made using the old Dashboards Interface. All of the functionality for dashboard reports remains the same. The new interface provides for a right hand editing pane, instead of the right click editing pane. Otherwise, all functionality of dashboard reports remains the same.
For a written tutorial on working with Dashboard Reports, please see this Exago Support article: https://support.exagoinc.com/hc/en-us/articles/115003009654-Dashboard-Designer