Automatic
Any variable in the data file with the name of weight will automatically be available as a weight.
Tagging variables as weights
Check the weight tag in the Variables and Questions tab (
). This makes it appear in the weight drop-down at the bottom of the screen in the Outputs Tab.
Alternatively, in the Data tab right-click on the variable and select Available for Weighting.
Next
How to Configure a Weight from Variable(s)