First, it is necessary to identify whether the adding models can be regarded as the same registration unit with the original models. If so, application for Change of Permission Items is possible.
In the case of no new standard involved, the judgment principle of typical model should be followed. If the original models can represent the adding models, there is no need to repeat the test for the adding models.
If new standard is involved, the testing report of the adding models for new standard should be provided.
If some items in the testing report of the original model can represent the items of adding models, there is no need to repeat the test in these items.