Exposed Sum of Occurrence Numeric Data in Items

A column can be added to the Items Perspective that gives the sum of a numeric occurrence data field. 

Set up

In order to view the sum of an occurrence numeric data field, it is important to associate a Data Type (unit of measurement). 

A user with administration rights will have to create the field in the Item Occurrence GUI.  

To view the value for a single occurrence, add the column via the column picker. 

To view the sum total of the occurrences as a column in the item perspective, add the column via the column picker.