Do you want to evaluate cost elements that are not stored in the standard view? You can create these as follows:
Log in with an administrator account.
Click on "System Settings" in the menu bar on the left and select "Cost Types".
Click on "Add cost element".
Enter the name of the cost element in the "Cost element *" field.
In the "Cost group *" field, select the associated cost group. This cost group determines in which category of the TCO overview these costs are included.
Click on "Save"
The cost element has now been created, and you can assign specific invoice items to this cost element.