Kentico CustomTableForm - Save records to a custom table

I am very new to Kentico. I have been saddled with a project of recreating a spreadsheet as part of a Kentico built website. I need to accept input from a form, and do calculations and then spit the results back on the screen for the end-user. Again...I am very new to Kentico. So I have been trying to use a custom table, and a custom-table-form. I have it saving an initial record to the custom table, but it overwrites it each time. What would be a proper way of taking in an end-users values from a form and being able to preform basic CRUD tasks with that data (and then display it back on the page for the user to see)?

Thanks in advance!