There is one download file, in a zipped folder.
Its name is mathalive.zip
Click Download (below) and save the zipped file to the folder Documents
Go to the Documents folder and click on mathalive (the zipped file)
Then click on extract files
The files are then extracted and put in a new folder called mathalive
The mathalive folder contains five folders, one for each of the programs. Click on each of these in turn, select the program file (the one with the appropriate icon) , right click for a menu and set up shortcuts to each of the three program files (applications). Choose send to and desktop to create the shortcut.