To edit an existing code-description in any of the grids, complete the following steps:
. That code-description window will open:
Note: From here you can edit the flow rate factor. If you edit a rating, the change will only affect data from that point on (i.e. past data will not be affected) unless you run the "Recalc All" option (under System Tools).

to save the changes.
to exit Edit Mode.
to close the window and return to the grid.