Frequent tipster Leonid Nemirovsky shares with us a way to simultaneously edit multiple grips of multiple objects.
"Highlight an object (or objects) to turn on its grips, hold down Shift, and select a grip (or multiple grips) to make it active. The selected grips will turn red. Release the Shift key, and now you can highlight other objects. With grips active, grab one of the selected grips to control all of the active grips on selected objects simultaneously. Pretty cool — and useful."