Right hand side menu for textures trees, furniture etc

The menu on the right hand side of the screen where I could select bricks, tiles, trees etc etc has disappeared-any idea how I access it ? Thanks, Nick

The “components” window is available under the Window menu. Is that the one you want? If it is checked and still does not appear it might have moved off your screen, sometimes happens when switching to an external monitor. Sketchup>preferences>workspace>reset workspace can fix that.