Different desktops, themes, icons etc. for a single user with Virtual Desktop

Hello KDE Promo

Im participating in the "Geniusz IT" contest, I am one of the finalists and
I would like to ask you for some help.

Im doing a 10-15 minute presentation about my own live Arch distribution -
ArchOS, which is based on the KDE Plasma desktop with a macOS-like theme,
along with some KDE applications.
Id like to ask if i could get some materials and tips for doing the
presentation which includes macOS look and Windows 98/XP's. I'd like to do
this using single user and virtual desktop / activities function in plasma.
The problem is, that it needs separated themes, wallpapers, icons etc. for
each one. My question is if there is a possibility to have different themes
and personalization on individual virtual desktops. I know, it's possible
using separated users on two other sessions in two TTY's, but as I said
before, I am thinking if it's possible with virtual desktops.
I will be waiting for a reply,


Best regards,
Szymon ([email protected])