Nobody else needs to install the BIM Server or Manager, but there isn't an easy way (without VPN back to your school network) for a laptop to be a server on two completely separate networks.
Ideally, the BIM Server should not be on your laptop, but should be on some computer that is always plugged into your school's network - assuming the school has a tech support person to help you set up either a VPN or modify the school firewall/port forwarding.
You can read these articles, but really, they are aimed more at the info tech support person:
http://www.archicadwiki.com/Teamwork/BimServerRemoteConnection
http://www.archicadwiki.com/Teamwork/WorkFromHome
Travel Packs might be another option to look at.
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB