When a Partner registers a Deal using the Deal Registration form, they have to associate the Deal with an end-user Account and Contact upon registration. Channeltivity includes a set of standard fields for the Account and Contact information, but you can add additional custom fields to capture more information about the Account and Contact by going to Settings > Deal Registration > Account or Contact > Add Field.
Please note that Custom fields added to the Account and Contact are not mappable to Salesforce or HubSpot.
Account Custom Field
Contact Custom Field