I want to calculate "Start Date" field by using "Date Required" field and a record that contains leadtime values eg. 5 days.
The result should be that if entered required Date is on 2/9/03 and there is 5 days leadtime the calculated start date should be 28/8/03.
I got as far as working out that I'm using the DateDiff function in the Expression builder. But I'm not clear how I can use this.
Any help is much appreciated