desktop shared folder

Hi, I'm using the following HW and SW: Mac 21'' late 2013, updated to 16 GB of RAM and SSD disk of 1 TB (yes, it goes like a rocket!), Parallels 13.3.2, host OS is High Sierra 10.13.5 and guest is Windows 10 Pro 64 bits updated to its last version, all three in Spanish language. I'm...