If a drag a ground with objects on it, I want all the objects to move together. The catch is that I need the objects to be able to still be able to move around, but relative to the ground they are in.
For example, if you are on a table and running around on it and I want to move you and the table across the room, I could pin you to the table, but then you can no longer move. How do I allow you to run around on the table at your own pace and speed while moving you together with the table?
See c3p file as an example: