Use synchronization to set same slice position, zoom & pan and windowing to the images opened in the Split screen. You can synchronize images from same series or different series, same study or different studies. Images have to be from the same or similar plane.

Synchronization settings are located in View menu / Synchronization.

switch on/off Slice position synchronization

switch on/off Zoom & Pan synchronization

switch on/off Windowing synchronization

switch on/off synchronization from same study

switch on/off synchronization from different study