The Data Project Designer’s refresh frequency is set, and information relating to the last refresh displayed, to the right of the properties panel.
You can select the frequency at which the Designer will be automatically refreshed from 5 seconds (the default), 10 seconds or 30 seconds. Note that the setting you choose is persisted when the Data Project Designer is next invoked. The date and time at which the Data Project Designer was last refreshed is also displayed.
You can also invoke a manual refresh of the Data Project Designer by clicking on the Refresh icon itself.