The best connection for any type of headphones - wired or wireless - would be the front head jack on the front of the receiver. This will activate the Silent Cinema feature which mutes the connected speakers to allow full surround sound experience through the headphones.
Yamaha receivers have a headphone output jack the uses a 1/4" connection, which is common to higher-end headphones. If your headphones use the standard 1/8" (stereo-mini) connection, simply use a 1/4" to 1/8" adapter which may have been included with your headphones.
The transmitter for the wirless headphones may require that you use an RCA to stereo mini plug adapter cable. The RCA side would connect to the transmitter for the wireless headphones and the stereo mini plug would connect to the headphone jack on the receiver using the adapter mentioned above.