Connect gravity forms to both customer and campaign objects

I’m using the gravity forms with Salesforce api. Everything works fine in creating web to lead form. But, is there a way I can hook up the form to integrate with the campaign object also? I want to be able to place the new lead in a campaign for marketing and tracking purposes. Currently, the salesforce setting only allows me to select one SF object at a time. Ideally, it would be great if I can connect both customer and campaign objects.

Thanks.
AJ