How Do I Screen Cast HMT-1 or HMT-1Z1 to an External Screen/Monitor?

For instructions on the recommended screen casting approach, see this instruction.

Note that some newer televisions have a built-in Screen Mirroring option. If the TV is set to this mode, the Screen Mirroring can be detected by the HMT-1 and HMT-1Z1 and connected via the Display>Cast setting as defined in the document linked above.