Stuart,
Well hey by the way, welcome to the forum, if you are on an iOS device, download the new forum app. ;-)
Yeah, even though some videos aren't specific for the Phantom 3, still are quite explanatory in explaining similar functions and how to access them. That one was helpful For what you are discovering, the hard way, sorry about that...
The thousands of Phantom owners around the world, & in many languages, continue to create better and better videos. That give much deeper incite than the cold straight facts of the manual. You would benefit much, like I continue doing, to watch many more videos and become completely at ease with the functionality of your awesome new Phantom.
They are the bomb. Sadly these and many other owner operator manuals because of being translated from Chinese or other 'foreign' (I hate using that word) languages to English, like all things leaves a bit to be desired.
I watched another video just a while ago myself and was surprised at some of the inner workings and how to access these parameters.
Yes, please Check this one out; follow along with YOUR app.
RedHotPoker