Locking Objects Together

If I have two objects which I want to keep independent so I can edit them yet still be able to move them and keep their relative positions. Now I’ve guessed that merging the meshes would cause problems when I want to edit but am not sure how to link them together.

I managed to get the camera to track my mesh by selecting it doing CTRL-T then selecting the mesh so I am hoping there is a similar way to link the relative positions (and also unlink them!)

EDIT: Sorry, I found how to make one the parent with CTRLP and how to ungroup with ALTP - at least other noobs will get the benefit of how I managed it! I’m getting there sloooowly! :smiley: