Should be easy enough... Simply call up Sherlock 2 and uncheck the "ON" for the drive or drives your currently indexing. You can also do this from "find" menu when Sherlock is at the forefront, clicking on "index volumes" and then on "schedule" and adjust it accordingly. Indexing is a wonderful feature so consider doing this at least periodically say once a week which can easily be scheduled for a specific day and hour.
------------------