Hubspot & Webflow Expert Needed - Hubspot form to send to specific inboxes

We have a Hubspot form setup on our Webflow website. The form is used for guests to contact us. They can select from a dropdown, what the reason for their contact is. We would like that dependent on what they select, when this is submitted this will appear in a specific Hubspot Inbox, within conversations. We have a different inbox aligning with each option on the form, so we would like this to match. Can you help with this?

Please only if you are experienced on both Hubspot and Webflow and totally understand the challenge.