Which two methods can be used to add a custom UI panel to a Webex...

Import an existing panel configuration file by connecting a USB storage drive to the device.

Use xAPI to push a JSON panel configuration to the device.

Create a panel using the device UI Extensions Editor (previously In-Room Controls).

Restore a device backup file present on a PC that contains a panel configuration.

From a T-shell session, use the git command to merge the XML configuration of a panel.