Self-Service Flow Steps is now in Open Beta and can be enabled on your Marketo instance through the Treasure Chest in your Admin menu. SSFS is a collection of features which allow ...
You can use the Forms 2 javascript API to hook into submission events and send your data over AJAX to your service. onSubmit and onSuccess are the typical callbacks you would use d...
No the activities would record each of the individual values for each of your events, they wouldn't be captured in a single field. What exactly is the end result you're looking for...
Custom activities sound better suited this this case: Understanding Custom Activities - Marketo Docs - Product Documentation They're only written once, instead of allowing updates...
Support can add these for you. Be sure to include the Display Name, API name, and Type(Date and Datetime are separate) for each field you're requesting.
The API you're referring to is only for creating and updating custom object records, we do not currently offer an API for managing custom object types.