How to split bandwidth shaping for PPPoE account

[almedin]

hi people
we have an ethernet network with about 100 users and all users can access to network, local servers and internet through PPPoE+RADIUS server (pfsense). All users must have traffic limit (5GB) and speed limit (512Kbps). Bandwidth shaping must be set by PPPoE user accounts (so not by IP adress). Next week we will buy a new server for local use. Now my problem is:

• how to set bandwidth shaping per PPPoE account?
• how can I split bandwidth counting for internet and for local servers? Primary goal is to count internet traffic for all users but all users must have unlimited traffic to local servers.

Thanks in advance
Almedin