Normally you can't share programs by running a program installed on one computer from another computer
When you install a program it adds files in numerous directories - EG Windows, application Data, Shared and so on.
When you run the program it will look locally (C Drive) for the files it needs.
Obviously, if you try to run from another machine the bits it needs will not be present and will not run.
You need to install the program on all local machines, which will allow you to work with files from
the other computer
You will need to purchase the program with the correct multiply user license
Multiple user license versions of programs are more expensive and you buy base on the amount of
users that will be allow to access the program 5 user license £300, 10 user license £700, 15 user
license £1000 etc