The first part, fully segregating assets, would require multiple databases and Lansweeper installations, one per site. For gathering all said data there currently is no functionality available yet, though we are working on a database aggregation tool in this context. We don't have an estimated release date for this yet though.
It is possible though to just scan all the sites in one installation for usage of the corporate administrator, though that won't have the benefit of directly originating from the "site databases" and would be completely separate.