make the hinge invisible and passable (i am not sure - it could be necessary that it also is in the same group with the attached objects) and place it exactly where you want to have the sliders. you can attach as many sliders as you want.

The hinge that I am trying to use is in the same physics group. I don't understand what you mean... "place it exactly where you want to have the sliders."

I would like to have several blocks constrained on different slider constraints(some being constrained on the x axis and some being constrained on the y axis). I want have moving blocks that go back and forth across different areas on the level that the player has to avoid. Does this mean that I need a different hinge for each moving block in this situation?

thanks,
Jason

yes, then it's better to have an individual hinge for each slider...

...
you could connect all of them to the same hinge. but all sliders and the hinge would be connected with each other. no constraint of the a6 physics engine can be totally rigid and so if you bump into a slider for example not only this slider would shake but the whole "construction" with all sliders connected to it...