Over time, no matter how careful you have been, you’ll end up with relatives in your genealogy database that are not connected to any other person. This is called an unlinked person in RootsMagic 3. You ought to periodically check for this situation. Fortunately, the software provides a way to identify them and then deal with them.
This video will take you through all the steps. Play it side-by-side with RootsMagic and follow along. You may want to back up your family file first.