From the File menu of Moneyspire, select "Save as" to save your data file to a location that all the computers have access to
Click the "Browse" button. For example, if all computers have access to a network attached storage drive put the data files there, maybe in a folder called “Moneyspire”.
Then in the Moneyspire App on each computer, please click on the File->Open menu option
(or from the welcome window, click the "Open existing file" button)
and select the file from your network folder.