Selecting Object Anchor/Reference Points

Hi, i am working on a Website and now im using the new Hover State functions.

I just got 2 rectangles wich are using the Hover state. They are positioned next to each other in the center of the Screen.I wnat them to both get bigger and extend on size if you hover over each of them seperately. I got the right one to get bigger with the reference point on the upper left corner. The problem is that i want the left one to do the Same but extending to the left side.

So i just want to move the hover state reference point to the upper right corner. If my bad explanation didnt get th right Image im hope the Screenshots will help.

I tried so look for the anchor points or just mirroring the object but i didnt found anything.

I hope there is a simple solution.

Thanks!!