Photo Shop Elements 14 Photo Editor When using the editor the page is to large to see the photo and edit it. How do I reduce the window size so I can edit the pictures?

When using Adobe Photoshop Elements 14 and I bring up a photo to edit I right click on the photo and choose Edit with Photoshop editor and it brings up the editor and it to large to work with the picture.  How do I adjust the size of this window so I can use it.