Sending a group text in Google Voice by typing one name in the “To” field

I’d like to be able to text multiple phone numbers without manually adding each number in the “To” field. This is my ideal scenario: in Google Contacts, I have two phone numbers for Jane: “111-111-1111” and “222-222-2222”; then in Google Voice, I type “Jane” in the “To” field, and it sends a group text to both of those numbers.

Is there a way, or a hack, to save and use a SINGLE contact with TWO phone numbers? I tried adding two phone numbers separated by a comma like this: “111-111-1111,222-222-2222”, didn’t work.