Indicate variables from the Merge Input Data Set by which to merge. These variables must be in the same order as the Key Variables from Base Input Data Set . If left blank , these are assumed to be the same as the Key Variables from Base Input Data Set .
Scroll through the Available Variables field to find the desired corresponding key variables.
Left-click to highlight a single variable. Hold down the key while left-clicking to select multiple variables.
Once you have selected corresponding key variables, click the button to add them to the Corresponding Key Variables from Merge Input Data Set field.