"Resume" on common app?

On the common app page specifically for Umass Amherst, under its Activities tab, there is a line saying “If you wish to submit your résumé, you may upload it here” with two upload buttons underneath. What does this mean? Don’t we already submit everything on the regular common app? What would I put on this resume?

My D did not submit an additional resume as she felt she got all the relevant experiences down on the common app.

Students should have a resume. My son submitted his to any school that gave the option including UMass Amherst. Google to find out how a student resume should be formatted, it’s a bit different than a professional resume.

My daughter did submit her student resume with the common app.

I strongly recommend submitting a resume. It is an additional place where you can list your extracurricular activities, achievements, and skills in a nicely organized and formatted manner.
One important thing to remember is that it has to be consistent with other parts in your common app.