Start channel fullscreen from epg

I have tried searching for a solution to this issue but cannot find anying.Tbh I am unsure if i am even searching for the correct thing.

I am running Kodi 17 and have a dvbviewer backend.
When I access the EPG (pressing e on my keyboard) and press enter to selet a channel it brings up a sub page? with 5 options switch, find similar, record, add timer and search youtube.
How do I get the channel to play full screen when hitting the enter button? I have been through the setting for the PVR & live TV and can find nothing there that would make the change I want.

Any advice would be very welcome.