To sort the channels on your Panasonic TB-40S45AEZ TV, follow these steps:

- Open the menu: Press the Menu button on the remote control.
- Select settings: Navigate to Settings and select Channels or Channels.
- Edit channel list: Select Edit channel list or Sort channels.
- Move channels: Select the channel you want to move and press the corresponding button (often OK or Enter). Use the arrow buttons to move the channel to the desired position.
- Save changes: Confirm the changes and save the new order.

Sorry, can't answer that, have returned the TV. Wasn't convinced by the picture quality.