Yes. Shower hosts need a Babylist account to access and manage your shower. They don't need an account before you invite them.
If they already have a Babylist account
Your host will receive an email invitation with a link to accept shower host access.
If they're already a collaborator on your registry, they won't need a separate collaborator invitation.
If they're new to Babylist
Your host will receive an email invitation to join your shower.
They'll need to create a Babylist account and accept the invitation to access your shower and registry.
Once they've accepted, they can help manage your shower details, invitations, guest list, and RSVPs.