Your question is a little ambiguous. What do you mean by operating point? Do you mean threshold voltage? I don't really understand why you are annotating these properties into the schematic since they are redundant. One can tell, simply by looking at the diagram, which terminal is the gate, source, drain and, if applicable, bulk. In practice, the notation for current or voltage for any terminal is also assumed from the diagram (e.g. Vx is the voltage of terminal x). However, if you wish to explicitly label these you can use "Create Wire Name." Depending on your Virtuoso version, it should be found in the top right and have the letters "abc" above a wire. Once you create a label you can move it to wherever you like.
I hope this answers your question. If not, please be more specific.