Shortcut to Split screen apps

I want to create a shortcut that tiles two apps to the left and right. I cannot find a way to do this. there is the split screen shortcut in the gallery but it does. not enter the full-screen tiled mode that I want. does anyone know how to do this? id prefer apple shortcuts but an apple script or a keyboard maestro macro would be helpful if it cannot be done in shortcuts. I am familiar with apple scripts but am a complete noob with shortcuts and keyboard maestro. the apps I have in mind are safari and trakt (a tv show tracker). if it's possible I would like to do the same with two finder windows since apple seems to ignore the possibility of a dual-pane finder.