I really liked the finished pieces.  However, it was tedious to assemble. I used an electric screwdriver to set the screws and then used the ratchet to tightened.. I called to-get help and the gentleman was very nice but could not answer my question on how to attach the set screw to stabilize the backs to the arms.  His answer was to call Angi for a handyman.  Fortunately my neighbor knew the answer to this.
The four pieces took a good couple of hours with a helper.