Hi John! Dr. Ray's "Ultra Log" demo might work for you... http://www.nightwing.com.au/FileMaker/demosX/demoX01.html Best Regards, Audrey On May 25, 2011, at 8:05 AM, John Wenmeekers wrote: > Thanks Salman. > > No way to do it with native FileMaker features? > > I'm thinking in the direction of a combination of script triggers on given > fields, linked to a specific 'Tracking' table.... > > JW