1. Install the different versions of Spire Desktop to separate folders in C:\Program Files by editing the Folder name in the following installation windows:.
2. Rename the shortcut on the desktop to something different by unchecking the below box during the install.
3. Go to C:\Program Files\Spire3_11\Desktop and right click on spire.exe and select Create shortcut.

4. Create the shortcut on the Desktop by clicking Yes to the below message.

5. Right click on the shortcut that was just created on the desktop and select Rename to rename it to something that will indicate the version.