When you select Specify find requests at the time the script step is defined, FileMaker Pro displays the current find request(s), if any. Additional find requests can be defined, and existing find requests can be duplicated, edited, or deleted.
In the Edit Find Requests dialog box, select the action (Find Records or
Omit Records) you want the find request to perform. A single find request can either find records or omit records, but cannot perform both actions at the same time. Use multiple find requests to find and omit records from within a single script step.