Using My I.C.E. Plan in a network allows multiple users to run My I.C.E. Plan at the same time but more importantly being able use the same database files which is really the key here. Additionally you only have to install My I.C.E. Plan on one computer. If there are more users helping to create a home inventory then your inventory will be created quicker. You can assign family members different parts of the house to inventory thus breaking down the task. If you use My I.C.E. Plan in this manner you will have a detailed inventory in no time at all.
To do this install My I.C.E. Plan on one computer as you would normally. After you install My ICE Plan then share the My I.C.E. Plan folder essentially using the computer you installed My I.C.E. Plan on as a " server" for the other users (computers, called 'clients') to connect to the shared folder and run My I.C.E. Plan See the My I.C.E. Plan online manual to learn more about setting up My ICE Plan for use on a network.
Note: if you are not familiar with Windows sharing then please see Windows Help to learn more or ask someone to help you, but it is much easier than you think.