Is it possible to relocate assets in bulk to be level on landscape

Is it possible to toggle or set all selected actor on top of landscape. Similar to when you drag in a new asset and it is set level on the landscape.

If I have copied in an entire neighborhood of assets and want to place them on the landscape.

Is the only way to manually adjust each asset?

It would be great if there is a right click set to landscape option is available?

Right Click after selecting and align bottom bounds to floor seem to be what I am looking for. Now I need to adjust the angles to the slopes?