On my E-M10, enter the Shooting 2 menu to turn RC on, then a different control panel with just the flash controls replaces the SCP on the display.
Ya, on one hand it is very convenient when you want to change the flash setting where you hit OK and now you can adjust something on the remote flash, but now you are basically locked out of all the other setting you previously were able to set via the SCP. As someone new to this particular RC menu, I don't know if this is much of an issue or not. Where I ran into the unfamiliarity of the RC mode the other day is when I was using the RC flash then decided a bit later I want to use the flash on the camera and couldn't at first figure out why it was not firing. I of course checked the flash to be sure it was in TTL mode that I wanted to use. I finally figured out I still had RC mode turned on. A nice firmware feature would have been if an Olympus flash is mounted on a Olympus body that is still in RC mode, to give you some sort of notification on the flash screen telling me it ain't gonna work since both devices are talking to each other.