WPA2-Enterprise should be supported but the GUI for configuration was never implemented in our settings add-on as the developers in the team who created the add-on never had access to such a network to test with (not very common in domestic scenarios). If you do things under the hood it should be possible to use; but this will require you to experiment. Start with "connmanctl" .. something like:
connmanctl
agent on
scan wifi
services
connect <name of service> <= tab autocomplete works here
When you connect to a normal network it asks for username/pass when connecting. I've never had an Enterprise network to test against, but maybe it asks you for all the required information. If yes, please report back
If not, have a look at Talk:Wireless network configuration - ArchWiki and Google for other examples of configuration and do some experiments. We store connman service configuration in /storage/.cache/connman/
NB: You will of course need an SSH connection via Ethernet to set this up. It's no issue to have two active connections; Ethernet takes precedence.