Thanks for posting here in the Google Nest Community.
Good question, let me help you. Voice Match must be associated with a Google Account. Only one Voice Match profile can be associated with a Google Account. If you have multiple Google Accounts, please only choose one account to set up a Voice Match profile. To let other people, like family members or roommates, use the devices in your home, add them as home members.
If you are looking forward to adding a home member and setting up their own voice match, follow the steps below.
The person you invite should receive an email with instructions.
Note: If the person you want to invite has already requested to join your home, you need to accept that request instead of sending a new invitation.
Check this link for more information.
Hope this helps.