Proprietor placement

The proprietor placement is a rarely encountered and hard-to-access object in The Sims 3: Showtime, found on a select few lots, for instance at the entry lobby of Port-A-Party Warehouse. The object also requires Buydebug to even be made visible on those lots, and even then they cannot easily be moved around or cloned.
The tile was seemingly designed to have proprietors welcome Sims at the entry, instead of having the proprietor walk mostly aimlessly around, though little is known about how it works.
A mod exists that allow placing it on any lot.