When a contact submits a Vuture form, for RSVP for example, the Function to which the form was originally sent through an email will be updated with their response.  When you set up a OnePlace form in Vuture, you can now select if you want the submitted details to be recorded against an alternate Function.  With Publications, it will add the contact as a subscriber to the alternate Publication chosen.

For example, if you send a mailing to "January invitations" Function, and link the registration form in the email to "Nottingham - January event" Function, when a contact submits their RSVP, this will be recorded in the invitee table of the "Nottingham - January event" Function.

This feature does not need a configuration change.  You enable it in the Form Settings (see image below).  

Why is this feature important?

This will be useful to anyone organising events in more than one location where they invite delegates to choose the location and then offer different RSVP forms - one for each location.  Each form can then write back to a different location list.  This has the effect of building an attendee list for each location.