Hi Jose,
Yes, HW has a pretty comprehensive set of master couplers.
The easiest way to find these is to click on:
'View' -> 'Mini Control Panels (for this organ)' ->'Master Couplers: Division I'
This will show a row of master coupler buttons towards the top of the screen. Click on ( I 4' ) to activate the octave coupler, and/or ( I 16' ) for the sub-octave.
To set this up on other keyboards, use Division II or Division III as needed.
You can also right click on a button to assign it to a MIDI message if you want.
This is covered in pages 108 and 109 of the current user manual.
Nick