Construction units and your drag coefficients are entered into the system using the dialog mask Drag coefficients. The dialog is also used to allocate drag coefficients to the pipe currently being edited.

New - Inserts a new additional resistance into the list. A new additional resistance is entered as "<New>" in the list.

Delete - Removes the selected additional resistance from the list. The additional resistance can be only removed if it is not referenced by any pipe.

Insert in pipe mask - Transfers the selected additional resistance of the pipe currently being edited on the list of the additional resistances.