First of all, you need to open a Powershell and launch this command:
Enable-ADOptionalFeature -Identity ‘CN=Recylcle Bin Feature,CN=Optional Features,CN=Directory Service,CN=Windows NT,CN=Services,CN=Configuration,DC=yourdomain,DC=com
If you have a problem when you launch this command, you can look at this post.
Now, if you check Active Directory Administrative Center you can see a new tab called "Deleted Objects"
For example, if one of ours administrators delete one user, computer... by mistake we can solve the problem, restoring the object from Active Directory Administrative Center
If you select Restore, the Object go back to the same folder where it was before. You can select Restore to.. for send the object to other forder inside the Active Directory