Calculate a time field

[#1]

Hi,

I'm aqlikview enduser and I have a question regarding a time dimension and moreprecisely a date to maturity date.

I must calculate a timefield but what's the best solution?

I create a script or acalculated dimension in a pivot table? And how

I have a field actnotif andI must create an alert for manager

For instance,  actnotif - 1 then to display delay in a pivot table but how must I create this?

Thanks

Best regards