enter find mode
set field1 ="borderline"
set field1 = "below"
This will produce a found set of records where field1 contains "below" OR "borderline"
This worked with one slight modification. I needed to add the set field commands to search the given date range both before and after the new request command.
You can also have your script set all of the criteria for your first request, then use Duplicate Record/Request to make the second request followed by using set field to set or clear any criteria that are different in the first request.