How to use Import Set API to Transform Data

[Meloper]

Hi,

i know how to write Datas in the Staging Table.

But what Endpoint do i need to call to Transform the Data?
What Roles need the User which is calling the API?

After writing the Data in the Staging Table ein get the response of the Import set right?
Whats next?

I have existing data sources and would like to keep the logic of the existing transform maps and especially the import set table

[Meloper]

Thank you, my question was poorly described...
I have existing data sources and would like to keep the logic of the existing transform maps and especially the import set table.