Cover Screen TIMEOUT - no option to extend duration??

[NiceSuit]

I saw a post from months ago "solved" via "not an option at this time" so I'll pose this (what should be a very simple tweak)  the need for this feature.  Please give us control over when the cover screen times out (not the clock but the app screen)!  Example; you use a TIMER widget but then it disappears in a few seconds.  I'd like to be able to SEE a timer count down, even for ten minutes if need be. 

Thanks.

[leahmullin]

It's in tbe display part in settings if tou have the z fold

[NiceSuit]

1) I posted this under Z FLIP... so I'd need the option for Flip.
2) Sorry but you've shown duration for the MAIN screen timeout, not the "Cover Screen" which is a different parameter (the small screen on the outside of the unit when closed).

Thanks, though.