You can't select where you land without signal. But within signal range, I call it a "remote landing"... here's how I do it.
1) While maintaining signal and VLOS...
2) Point the camera gimbal straight down.
3) Select your "remote" site to land based on the cross in the image (select a cross if you haven't already). Obviously look for somewhere with short grass/ smooth, no people, etc.
4) Take a picture of it via the drone
5) Take a screen shot on you monitoring device so you can find the location later.
4) Set that position as the new Home point in Go 4
5) Press the RTH button.
6) Go get your drone.
As it descends, you may lose signal depending on the distance you have chosen, attenuating obstacles, etc. But it will land and shut down the props just like any other RTH action. Of course you have to turn the battery off.
To qualify this procedure, select a remote site that is only 50 ft away (preferably on your own property) and try it while maintaining VLOS. If it is not landing where you thought, you can alway abort the RTH.