Orchestrator Iterate over grid data

Hello,

I am new using the orchestrator. I am wondering if it is possible to launch the orchestrator from a form extension button and have it iterate over the grid data records that the user has selected (or all the grid records if it is easier).

So the user do a find in a screen that return records. And after he clicks on the orchestrator button and the orchestrator iterates over each line of the grid, select it and update it.

My issue is that the records are already returned by the user when the orchestrator starts, the "Find" is not part of the orchestrator.