When the SSH tunneling features are not enough, you can workaround it with other remmina functionalities, e.g. with the pre and post commands in the Behavior TAB, or the SSH proxy command for the SSH connections.
Socks proxy connection
In this example, before to connect to the remote server, we create a socks tunnel, that will be closed when the Remmina connection end
Host foosock User foo Hostname foorealserver ControlMaster auto ControlPath ~/.ssh/cm_sockets/%r@%h:%p
precommand=/bin/ssh -fn -N -D 9090 foosock
postcommand=/bin/ssh -O exit foosock