There several methods you can use to deploy the new Application (front End) version to all the users on the local network (LAN).
Here are some of the commonly used solutions:
1) Manually copy the file from the server to a the local folder.
2) Use a .CMD fiule to copy the new version from the server and launch the application (front End)
3) Use some type of auto updater. This will automatically detect and copy a new version application (front End).