Question: How to make the TChart with several series?

Answer:

You can't do this in designer. You need to write some code in Delphi. Create TChart or TDBChart, fill it out; put the empty TfrChartView to the report; write the following code in the TfrReport.OnBeforePrint event handler:

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if View.Name = 'Chart1' then
TfrChartView(View).AssignChart(your_Delphi_chart)