I have a master list of all of our cases--there are approximately 20000 rows,
each row representing a single case, and each row has 13 columns of data. I
filtered the list, for example, to see all of the active cases for a case
manager. Suppose that filter produces 117 cases (there are of course a
different number for each case manager). I want to create a macro or use a
formula to randomly select one of these rows as a way to randomly select
cases for audits.

Is there a way to do this?
Thanks.