I have no experience with MPS, possibly the server administrator can help more.
Also, maybe LibreCAD is not well prepared for multi user environments.
Anyhow, Windows should be able to handle multiple user settings in registry and config files under My Documents\AppData.
So you can manually add a LibreCAD shortcut to the AllUser start menu or each students start menu. Assumed that the students have permission to the program folder.
Armin
investing less than half an hour into Search function can save hours or days of waiting for a solution