Hi YHWH_777, here is a plug-in that will do what you are asking about.

Unzip it and copy it into the \commands sub-folder inside of MoI's main installation folder. That will then make a new command named ScaleIndividual. To trigger it set up a shortcut key with ScaleIndividual as the command name part of the shortcut.

When you run it, it will ask you for objects to scale, and then a scale factor and when you push Done it will scale each object by that scale factor using the center of the object's bounding box as the scale origin.

- Michael