Open **Settings > System > Multitasking** and expand **Snap windows**. Turn on every sub-option: show snap layouts when hovering the maximize button, show snap layouts when dragging a window to the top, show my snapped windows in Alt+Tab and Task View, and show snap groups when hovering taskbar icons.
Settings -> System -> Multitasking -> Snap windows
[x] When I snap a window, suggest what I can snap next to it
[x] Show snap layouts when I hover over a window's maximize button
[x] Show snap layouts when I drag a window to the top of my screen
[x] Show my snapped windows when I hover over taskbar apps
[x] When I drag a window, let me snap it without dragging all the way to the screen edge
tipPress Win + Z over any window to open the layout picker directly.