Beyonwiz DP-H1 - Manual (Page 54)

STB & PVR Function
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4) Service Change on Favorite Group
If you change services using the service list when you select a favorite
group, the service list will show the services belong to that favorite
group. You can change among these services on the list.
If you want to exit from a favorite group and list up all services
available in the service list, please press the BLUE button when the
service list is displayed.
If you change services with the CH+/CH- buttons, it also changes
among the services that belong to the favorite group you selected. The
information box will indicate which favorite group is selected.
You can also exit from the favorite list by pressing the RED button when
the favorite list is displayed.