Project sources tab
In the "Project Sources" tab, the specific time series are selected for the currently selected project (or the currently created new project), the values of which should be displayed in some form and selection:

To add a time series to the statistics project, drag and drop it from the list of all time series on the left to the "Assigned Data Sources".
By clicking on one of the selected data sources, the display color of this time series can be selected in a ColorPicker that appears after clicking "Color":
