i wish i can see screenshot for that feature, i haven't try zorin core, but i don't know , may be that xfdashboard in xfce similar to what u talk about.
sudo apt install xfdashboard
when u install it u will find them in app menu, and u will find xfdashboard settings, which u will search about what u want to customize
**edit:to use xfdashboard u can make launcher for xfdashboard on the panel to use it, but if u want to use it like core, u mark it in session and start and install hotcorner plugin in xfce
if u can't install the plugin , u may need to run this command
sudo apt-get install -y libnotify-dev