In other parliaments in the Commonwealth that have this, you originally go around and ask the parties how many votes they have. If that adds up to the total number of votes in Parliament, then that's the final answer. If there are votes missing because the party had certain people dissenting, you can then ask those people whether or not they want to vote.
Now, is that virtual voting if you have five members on Zoom who say they're voting differently? I suppose it is, but it's not the same as having all 338 members voting.