Hi when I add in metaballs only one can be selected and moved, moving it rotates the other balls, and I can't move the others, this is only with metaballs. Here's a video showing what I mean https://www.youtube.com/watch?v=dMSJwpvO9PE&feature=youtu.be
Meta-objects, like many other objects, have an edit mode. In edit mode you can create more meta-objects that are part of the first, and will be transformed all together when they are transformed in object mode.
Meta-objects will still stick together regardless of the whether they have been created in object or edit mode