In general yes, you can add multiple virtual NICs to VMs, and they can have different backing NICs.Is it possible to assign to VM 2 interfaces, public and private?
Yes, you are right, after creating vm i was able to add more ifaces thru HW tabYes, the Webinterface VM creation wizard is limited to the most used options, one can always add more network interfaces or disks or other Hardware after creation.
So create the VM, assign one interface. After creation go to the VMs HW tab and add the other.