To add all new Relevize leads to a Hubspot List, you'll need to add a new field mapping on the Relevize field mapper page.
Navigate to the Relevize Field mapper: relevize.com/spa/a/field-mapper
Click "Add Field"
Select Template for the Relevize Field type
Select list_id for the Hubspot field type
Enter your Hubspot List ID in the field to the right of list_id.
Don't know your Hubspot List ID? Here's how to find it!
Open up Lists
Click "Details" button on the list you're using
Copy The List ID