DSR adding a new XSI interface to an MP

Hello guys

for DSR version 8.5 installed on Vmware , customer needs to make new interconnection with a provider , for this reason I wonder if it possible to create new XSI interface and add to an already deployed server ( vSTP or DA is the same ) .

I'm testing in the LAB , I've switched off the VM , added the network interface , then from NOAM I've created the new XSI network , but when I try to add this new XSI to the server , from NOAM - > Configuration - > Servers there is no way to add it , there is no space or tab to click for add a new OAM interface ( XSI ) .