Synchronous Axis

Hello. 

I am using plc open for one of my projects. I am a little bit of newbie in this program. I made two position axis (i have two motors) and now i need to synchronise the motors. I noticed that my slave axis needs to be SynchronousAxis to be able to put as parameter in the function block. So my question is: Can i use Synchronous Axis as a normal one (position axis) while the axes aren't connected with GearIn.

Regards 

Stefan