Site
From Senfi Docs
As pointed out in general concepts, a site is a place where sensors are located. A site usually contain buildings, which may be composed of different building blocks. Each building block is in turned made up of levels. Hence a site in Senfi is organized into: building > block > level.
It is strongly encouraged to have a floorplan associated with each level. This makes it easy to locate things both in 3D as well as in 2D. Associating a floorplan with a level requires calibration. This process involves selecting a few corresponding points in the 3D building and the floorplan. This only needs to be done once when adding a floorplan, or when there are changes to the floorplan or 3D model.