Diana McDonnell

Hi forum, I'm wondering if there is a way to specify some variables where I want an exact match? I have a list of lots of demographics and test scores among high school students and want to match the school and academic year exactly. This seems to have come up partially before (see: https://sourceforge.net/p/psmspss/discussion/general/thread/467c03c9/?limit=25#671c), but the method was not clear to me as I don't see that option in the dialog window. Thanks! ~ Diana