How to archive multiple values for the same time stamp in a single point with analysis output?

Hi,

I have event frames that output values to a PI point using output at close. I have multiple elements generating events from the same template and I would like all outputs to be in the same PI point. It works fine except that values with the same time stamp will substitute each other.

 

How can I configure this PI Point to archive all data even if they have the same time stamp ?

 

This behavior is often managed by Location when data are coming from interfaces but I don't fine documentation for data coming from analyses or event frames output.

 

Regards,