Hi @mriz!
You are probably referring to the following dialog:

That's a question I get a lot from my customers.
For AEM as a Cloud Service, there is a "Restore" button available once you have selected a page. It will open a dialog to restore a page/tree:


Unfortunately, this restore functionality is not yet implemented for Touch UI in AEM 6.4 nor 6.5. 😕😕
I expect it to be made available with one of the next updates / service packs for AEM 6.5, but have no insight into the exact roadmap or timeline. As AEM 6.4 will not receive additional updates (see release reoadmap and product end of life matrix), I wouldn't expect it for that specific version of AEM.