Just in case readers are not familiar with the syntax (we don’t need to do this sort of thing very often nowadays…), this is a complete shortcut example where I wanted to set my user folder to D:\Rack2, and the Rack program is installed in C:\Program Files\VCV\Rack2Free\Rack.exe. Note the use of quotes to set folder locations in each case. To create a shortcut, right-click on the Rack program file and create a shortcut on the desktop. Then, go to the properties for the shortcut and edit the Shortcut-Target box.
"C:\Program Files\VCV\Rack2Free\Rack.exe" -u "D:\Rack2"