As of now, Heads-Up is only available for a single WiZ Home for a given user.
After subscribing or when you go to manage the subscription in WiZ app v2, you can decide on which Home Heads-Up applies. If you need, you can transfer the coverage from one WiZ Home to another.
In the future, additional plans and offers for Heads-Up may include coverage for up to a certain number of WiZ Homes for users who want to cover multiple separate Homes.