Samsung UN75ES9000F E-Manual page 674

N
You can also change the channel by
touching the up or down channel
icon on the touch pad. If you touch
the touch pad immediately after, the
TV displays the list of memorized
channels. Select a channel by moving
or flicking your finger up or down,
and then pressing the touch pad.
N
If you change a channel by entering
the channel number, that channel
number is memorized and added