LG WM2496H M Series Manual page 27

Dispenser
WM2496H*M
Notice that the pre-wash and
main wash fill tubes enter the
dispenser at an angle. If one
or the other fill valve is
opened, the water goes into
the appropriate detergent
compartment.
However, if they are opened
simultaneously, the streams
deflect and dispense the
softener. Some water may run
through the main and pre-
wash compartments, but
since the detergent has
already been dispensed in an
earlier part of the cycle, this is
of no consequence.
p20~21