In the Documentation -> luminaire layout plan, the placement of the luminaires is provided according to a reference coordinate system.

However, it is not clear how the origin of the reference system is devised.
For example:

or

The origin of the reference system of these two environments/rooms are located inside the walls or in another room.

Even if the documentation provides x,y coordinates for the placement of the items, they are of no use for an electrician/worker, because it is inconvenient or impossible to locate the x,y origin.

It should be possible for the user to choose where the origin of the coordinate system is located.
For example, a corner of the room, or a special feature of the room/floor plan, that are easy to locate for those in charge of the installation.

Is this achievable somehow?