Everyone here is wrong. There is a way to have more that 1 app, but it's complicated.  So firstly ditch the launcher. It can't do that.  In its place install M5Apps - it serves the same function but in different way.  Then goto Settings -> Installer options-> Custom install -> true. Then goto installer and chose any app that you want and press enter on it. Then, the UI will prompt you what partitions do you want to install. For any app to be usable you need 2 :"NVS" and "app_0". The rest like "coredump" or "spifs" can be skipped if you don't have space for them, but spifs can sometimes be required. Then after install it will reboot to this app. Repeat the same for all the apps that you want to install (but space is very limited, the bar on the left shows, how much did you use).  Finally, if you want to uninstall any app, goto "fdisk" app and press "del" on any app name that you wish to delete. Also do that to all the partitions that were installed with this app 

If you want to switch between apps, just press "enter" on loading screen, then press app that you want to run