Very easy to do, there is a black release lever on each side when you pull the drawer out. One side you’ll lift up, one side push down, do this while pulling drawer out and it will slide right out. To put in, push guides in cabinet in all the way, pull bearings forward and insert drawer tracks carefully into the cabinet guides making sure they fit into the black plastic blocks correctly.
Here is a quick video...
https://youtu.be/0oGtCRwrSoc