Bluetooth Edit Serial Ports

Hi,

I need to connect two computers by a serial Bluetooth connection, being that one of them is my MacBook and the other has a Bluetooth USB dongle. I can pair the two devices but my Mac insists on considering that the other computer is a audio device, and thus it does not create a serial port for communications...

In this tutorial I found that in previous OSX versions it was possible to change the Buetooth device's service, but in ElCapitan I can't find a way... Can anybody tell me how to do it? The window I'm looking for is this one.

Thank you for your time,

Alexandre