Each window inside element can be moved and repositioned for your screen preference. By dragging the window name bar (such as “Preview”), the window highlights the new position on release. You can also place the cursor between windows to stretch or shrink them. Drag windows around until you have found a suitable layout and Element will retain these settings for future use.
In the Element scene setup under the Window tab you can reset your panel layout to defualt or try out the other 2 Layout presets.