There is a new Builder AddOn, for passivating III-V structures like the model of an 8.3 nm wide InAs FinFET (just the actual fin, not the whole FET) shown in the picture. Use like the normal passivator tool, which is designed for group IV elements, i.e. select the atoms to passivate and click the icon - simple!
To download the III-V passivator addon, use the AddOn Manager (in the Help menu) in VNL 12.8.
