Rules for a field changing

[kanjeep]

I need to put a check box next to the lines on a report for each of our job presses. The problem is that there can be more than one job per press and I only want the box on the first occurrence. Any ideas on how I should/could go about this?

 

[lark_tilly]

How is the report set up?
Do you have it grouped by press or is it one report sorted by job due date or how?
The answer will depend on how the data is arranged on the report.