Use this procedure to add, remove, or sort calculation modifiers for a zone.
By default, a calculation modifier is applied only to the base area and base perimeter of spaces attached to a zone. To apply the modifier to the net, usable, and gross boundaries of an attached space, you need to create and apply a property set definition that contains properties for the calculated area and perimeter values of these 3 boundaries.
- Select the zones you want to change, and double-click one of them.
- Expand Basic, and expand General.
- Click the setting for Calculation modifiers. Note: This setting can be edited for multiple zones only if these zones have the same modifiers attached in the same order.
- Attach or detach calculation modifiers:
If you want to… Then … attach a calculation modifier style for Available, select the desired calculation modifier style, and click 
. detach a calculation modifier style for Attached, select the desired calculation modifier style, and click 
. rearrange the order of attached calculation modifier styles for Attached, select the calculation modifier style to move to a different position. Click 
to move the calculation modifier style up in the list, or click 
to move the calculation modifier style down in the list. - Click OK.