Concepts in the Charge back system report
Building common area and floor common area: Building common area, stands for those parts of the building whose costs are shared between all building occupants whereas floor common areas are surfaces whose costs are charged on to the occupants of a particular floor. The concepts building common area and floor common area play an important part in calculations of the Charge back space usage report.
BOMA standard: It is an international suite of measurement standards for building measurement. The BOMA-A standard is supported in the Charge back space usage report.
Charge back type: These are the charge back types used for the Charge back space usage.
0-Do not charge back
The space usage is not charged back at all.
1-Completely charge back
The surface area of the space usage linked to a space type is directly and 100% charged to the department or cost center to which the area belongs.
For example, offices.
2-Proportional to floor area
The area of the space usage linked to a space type is charged back proportionally to spaces on the same floor, which are linked to charge back type 1 (completely charge back).
For example, kitchens, corridors.
3-Proportional to floor area of property and sub properties
For this method, it depends on the hierarchical level at which your indirectly chargeable space is located in your property structure.
If the indirectly chargeable space is located at Complex level, the directly chargeable spaces at the complex level and all lower levels are included in the calculations.
If the indirectly chargeable space is located at a lower level, only those directly chargeable spaces are included in the calculations which are located at lower hierarchical levels than the indirectly chargeable space.
4-Proportional to floor area of main property
For this method, it depends on the level at which your indirectly chargeable space is located in your property structure.
If the indirectly chargeable space is located at Complex level, the directly chargeable spaces at the complex level and all lower levels are included in the calculations.
If the indirectly chargeable space is located at a lower level then those directly chargeable spaces are included in the calculations which are located at the same level and at lower hierarchical levels than the indirectly chargeable space.
5-Proportional to floor area of complex
For this method, it does not matter at which level your indirect space is located in your property structure, because the whole complex is included in the calculations.
* 
If all spaces are located at the third and lowest hierarchical level in the property structure, it is currently impossible in the report to search for the parent building and involve all sibling buildings in charging back costs for an indirectly chargeable space.
Common area: Common areas are those areas within a building that are available for common use by all building users, both the building occupants and their guests. For example, corridors, hallways, lobbies, and so on.
Directly or indirectly chargeable spaces: Directly chargeable spaces are paid directly by the users of those particular spaces. In addition, there are spaces for which the building occupants are indirectly charged, because they share them with other building users. The concepts directly chargeable space and indirectly chargeable space or in short ‘direct’ and ‘indirect space’ play an important part in the Charge back space usage report. They are also reflected in the charge back types and you can select them from Space type of the space concerned.
Illustration showing Space management system - Property structure
Space type: In the Spaces & Workspaces TSI >Components selection level >Space types, you can specify as many space types as you require. Each space type is defined by a code, name, color number, hatch pattern, and a charge back type.
Space usage: In Spaces & Workspaces > Space details >Space usage , you can link space usage to a space type. In the Charge back space usage report, the start date and end date of the space usage define for how many days the area of that space usage is taken into account.
Tariff group: In Spaces & Workspaces > Components > Tariff groups, you can specify a price per m2 (or ft2) per # days. This can be used in your Charge back space usage report, by linking each space usage to a tariff group (direct spaces and indirect spaces). Based on the selected Area field (Net, Gross or Rentable), on the reported period and on the actual space usage in the Charge back space usage report, the chargeable area is expressed in money.