How to adjust Overscan on E2 Builds?

Hi all, I´ve been using E2 on my Wetek for about a year now and love the box, the only niggle I have is being able to adjust the Overscan.
On most E2 images for other boxes allow´s for adjustment of the screen size so stop letters and numbers from being cropped off by the edges of the screen.
I´ve tried Vix ATV and PB and am unable to find any adjustment.

Has anybody found how this is done?

The odd thing is, Kodi still allows overscan adjustment, so you would think it would still be possible in E2

Thanks master G, That´s where I look for the option in OpenATV on my other receivers but on the wetek there is no option to adjust.