UV set index – Specifies a UV set index to be used. If a UV set name is specified, it is used instead. -1 (negative one) is a special index value that links against the first UV set found for a mesh.
UV set name – The name of the UV set to be used.
Motion Blur Samples Options (available only for 3D Placement)
Override motion blur samples – Overrides the count of motion blur samples.
Motion blur samples – – Specifies the motion blur samples.
Expression Editor icon () – Opens the Expression Editor.