If the software is configured properly, send the selection to cutter... It should cut.
You have to make sure the software and cutter are set the same. It has been a few years, but things like baud rate 9600, hpgl3 etc have to match between the software and plotter. Check the setup or configuration setting on each.
Others here will be way more knowledgeable.
You need to read the manual for your cutter. It will be available online. Check YouTube for setup of both plotter and software.