I'm on the wrong computer to try this right now, but as I recall you just drag a selection box around all the models. If you miss one or two just hold down the ctrl key and click what you missed. They hold down the scroll wheel and move them around by moving the mouse. DO NOT turn the scroll wheel or you will make them all bigger or smaller. Maybe best to just try using the arrow keys, but do not hold it down or it will quickly move everything off the screen. Do not ask me how I know that. LOL