habitaton door locking from inside

Hi Newbie here not yet slept in my Nuevo yet but going through all the details.  Now can you tell me please how do I lock the habitation door from the inside for security reasons... ?   thanks   Mags

If its like this turn to lock - can't remember which way but the opposite to the way to open the door.  If its the Seitz door, push down the button on the top of the inside handle.

Peter