You'll have to get in contact with those that own these apps to see if they can be tweaked to what you want.
We have given our son a tablet (Galaxy Tab A 8.0) and have had good success with the Kids Mode app with our older daughter. However on this version we are not able add YouTube as an app in Kids Mode as it does not allow pre-installed apps. Is there a work around for this? YouTube Kids is fine but blocks a significant amount of videos that he likes (he is really into insects).
I don't quite understand the rationale behind this. But I'm hoping there is some easy fix? Perhaps removing the pre-installed Youtube and reinstalling?