Olympus EM1MK2 rear button (video) focus and peaking

Hi all

Can any one help, I've set my  rear button focus (video) on my Olympus  EM1mk2  and also have set the front button to SAF.

I can update the focus  by either button, all good so far

However if I turn on Peaking, the peaking has to be turned on every time I use back button focus, but the peaking stays on with the front release.

Any ideas why this is?

Kind Regards

Andy 

It has to do most likely with the fact that all back and menu are customisable and the shutter isn't so each time you take a custom button is like you are using one function at time and you can't have both at the same time if that makes sense?

Hi thank you, I guessed it was just a limitation of options

Just checking just in case I was missing something or there was a work around i could try. 

Thank you