Revolve / Curve's Centre?

Hi,

I am trying to do something that would appear simple. To revolve a curve to create a surface.

I want to do this revolve in different places: same curve different axis and different surfaces. I understand that I would need to move the profile curve every time to wherever the axis is, and align it in a way so it revolves as expected. To do this I need a curve's center, which I dont know if there is.

Attached is an screenshot to illustrate the issue. Note that the screenshot only shows one revolve. Mind, I would like to repeat this many times.

This is my first post!!

cheers