You mean, find an arbitrary POI below the view you want; set it; then point the camera up to the horizon and GO? The bird will then just rotate at the speed you set it? Seems odd.Forget all these settings, as you can't yaw really slow.
Go to the Point Of Interest flight mode.
Pan above the POI so that the camera sweeps across the distant horizon, without the POI in the shot at all.
You can also rotate the Mavic 180 degrees and face away from the POI and record what’s facing away from it.
In other words, it can be programmed to revolve in a 360 degree circle to take in the vista and not the POI.