This article explains how proposed values work for attributes.
Proposed values allow selecting predefined attribute values directly from the Attributes tab. When a value is selected, changes can be displayed live in the 3D viewer.
To do that, follow the next steps:
Open an item and go to the Attributes tab
Attributes with proposed values display available options. Click on the attribute and select the required value from the dropdown
To see live changes in the 3D viewer, open it by clicking three dots close to the catalog name and select the 'Add 3D Viewer' option
This setup allows updating the attribute values and see the configuration updates in the 3D viewer immediately.
Please note that Proposed values are available only on the Attributes tab and apply only to attributes.