To assign custom property values to a selected ARCHICAD element, open the Classification and Properties panel of Element Settings.
The element’s available properties are all listed here. Available properties depend on the element’s Classification(s).
For each property, the chain icon indicates that its value is linked to the default for this property. (Default value of each property is defined in Property Manager.)
Click on any property in the list to assign a custom property value for this element.
If the default value is <Undefined>: click the chain popup. Then choose Custom Value to unlink the default value and enter a custom property value instead.
Depending on the property’s data format, you can choose from a list, enter text, or simply type in a value.
The custom value can also be “Undefined” for this element. Click the chain popup. Then choose Set Custom as Undefined. This undefined value is not linked to the default, and will not be updated in case you change the default value.