Moving landscape sections

Hello.
I’m creating village in my level and my co-dev came up with idea that the village should be higher, but i had already made the cliff exactly as i had wanted so. . .
Is there some way how to move up certain part of landscape or it’s sections ?
I kinda don’t want to lower everything else but it is soulution as well. I mean, it will be if this isn’t possible :smiley: