I am assigned a task on K2 Blackpearl that involves programmatically stopping the process of certain workitems directly without using the product's interface as it does not serve the purpose.

The problem is that in this business requirement, a specific proponent can have multiple document uploads which was possible by making a custom application that reads rows from an excel file and uploading to K2 automatically.

The developers of this solution are no longer present and the details of their work are unavailable.

I am just told that stopping of processes can be done using a custom console application.

Can someone please teach me the right path? I have no prior experience on K2 so this is a huge task for me as I am unfamiliar with its flow.