There are the default settings using Amazon and Nvidia remote, other remotes may vary but should be very similar.
NOTE: The remote buttons can be customized to your preferences in Setting/Remote control.
Select Button
On TV Guide
Quick Press - Select Channel
Long Press - Settings
When on a future program
Quick Press - Record/Remind Menu
Long Press - Full menu
On Program
Quick Press - Previous channels
Long Press - Quick Menu
Back Button
On TV Guide
Quick Press - Groups/Menu
Long Press - Return to program
On Program
Quick Press - Go to TV Guide
Long Press - Exit program/go to TV guide
Directional Ring
On TV Guide
Scroll up/down/left/right
Long Press - Left to scroll to past programs
On Program
Left
Quick Press - Channel list in preview mode
Press Again - Groups
Long Press Left - Same as quick press/different view
Right
Quick Press - Previously watched channel/return
Long Press - Program information/upper right
Up
Quick Press - Channel up
Long Press - Remove from history
Down
Quick Press - Channel down
Long Press - Search Programs/Channels
Rewind and Fast Forward Buttons
On TV Guide
Rewind - Page up
Fast Forward - Page down