SharePoint Collection Column provides a way to display related items in the form in one SharePoint list. The total and calculation features enable you to easily aggregate and organize data based on your business needs. Users can easily bulk add, edit and delete related items in the current list without going to source list. Even better, you can decide whether the related column is read-only or editable in the current list. With Collection Column, you can display the total of related column in the form. Collection Column supports these calculation operations: Sum, Max, Min, Ave and count. With BoostSolutions calculation component, you can do complex calculations. Like with SharePoint OOTB calculated column, you can design formulas using other columns. Even better, more functions and operators are available for building formulas.