I have to concur with @milkmanchris … I gave up with Go4 for waypoints for so many reasons it’s not worth listing them.
With Litchi you can create/plan as many missions as you have patience to create from your laptop (no need to be wasting phone/RC/drone batteries), and they appear in the app on your mobile device.
You can create them on the mobile device, too … but on a normal mobile device sized screen it’s a bit of a fiddle, and a couple of useful functions available on the web version on your computer aren’t available in the mobile app.
Missions you’ve created on the laptop can be easily tweaked in the mobile app, where needed (an unexpected lighthouse/tree in my case), when you get to site - and saved back to the server,
And if you need to use one another day - they are there to use.
It’s far more powerful, far more features than Go4 … so it takes a bit more time to master but, even though I’m very much at the learning phase, I just wouldn’t ever bother with waypoints in the Go4 app.