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Click 'Add Dataset' in order to add data sets to the chart. A window such as the following will be presented.
The first option is
It is important to first select the 'Data Type'. Clicking on this field the user will be presented with two choices; 'NMIS Graph' or 'NMIS Dataset'. For this example choose 'NMIS Dataset'.
After selecting the Data Type 'NMIS Dataset', the form will change slightly as below.